FITLET2-CJ3455-D16-M512S
The Compulab FITLET2-CJ3455-D16-M512S is a ready-to-run fanless embedded micro-PC measuring 112 × 84 × 34 mm and weighing 350 g, built around the Intel Celeron J3455 quad-core processor (1.5–2.3 GHz, 10 W TDP) with 16 GB DDR3L pre-installed at maximum platform capacity and a 512 GB M.2 SATA SSD. The die-cast aluminium chassis dissipates heat through convection with no vents and no moving parts, whilst the dual Intel I211 Gigabit Ethernet controllers, HDMI 1.4, mini-DisplayPort 1.2, RS-232 serial port and four USB ports deliver the connectivity required for IoT gateway, edge computing and embedded controller deployments directly out of the box.
Beyond the standard I/O, the FITLET2 platform integrates a FACET card slot (Function And Connectivity T-card) on the front panel — a proprietary modular expansion interface that adds a second independent I/O tier: options include dual 2.5 GbE or PoE Ethernet, Wi-Fi 6E + Bluetooth, 4G/5G cellular modem, RS-232/485 or CAN bus serial, and four additional USB 2.0 ports, all without changing the chassis or baseplate. Combined with a 5-year warranty, MTTF exceeding 100,000 hours and CE/FCC certification, the FITLET2-CJ3455-D16-M512S is a platform suited to long-lifecycle deployments in space-constrained industrial, retail and infrastructure environments.
Key Features
- Intel Celeron J3455 Quad-Core 2.3 GHz — Fanless at 10 W TDP: Four 64-bit Apollo Lake cores with a burst frequency of 2.3 GHz and 10 W TDP fit inside the 112 × 84 × 34 mm die-cast aluminium chassis through convection cooling only — no fan, no heatsink fins exposed, no vents; Intel HD Graphics 500 drives both display outputs simultaneously and provides hardware H.264 and H.265 video decode for digital signage and video analytics applications; VT-x and VT-d virtualisation support enables hypervisor deployments and virtual network appliance configurations
- 16 GB DDR3L — Maximum Platform Capacity, Pre-Installed: This configuration ships with 16 GB DDR3L-1866 in the single SO-DIMM slot, which is the maximum memory capacity supported by the FITLET2 platform; having maximum RAM pre-installed means no post-delivery upgrade is required for applications that use local in-memory databases, multiple concurrent virtual machines, large-dataset edge analytics or memory-intensive protocol gateway stacks — the unit is deployment-ready at maximum specification
- 512 GB M.2 SATA SSD — Substantial Local Storage in a 112 mm Chassis: The 512 GB M.2 SATA drive provides sufficient capacity for OS installation, application stack, local historian data and edge analytics model files within the M.2 2242/2260 slot; storage is upgradeable — the M.2 slot supports SATA 3.0 drives up to 2260 form factor, and a 2.5" SATA drive can be added through a dedicated FACET card option for deployments requiring multi-drive redundancy or additional capacity
- Dual Intel I211 Gigabit Ethernet — WoL, PXE Boot and Network Teaming: Both LAN ports use the Intel I211 controller, providing Wake-on-LAN, PXE network boot and 802.3ad link aggregation (teaming) alongside standard GbE; two independent NICs allow physical separation of management, control and data network interfaces — a common requirement for IoT gateway deployments where OT device traffic must be isolated from IT management traffic on separate network segments without VLAN configuration
- HDMI 1.4 and Mini-DisplayPort 1.2 — Dual Independent 4K Display Output: HDMI 1.4 supports resolutions up to 3840 × 2160 @ 30 Hz; mini-DisplayPort 1.2 supports up to 3840 × 2160 @ 30 Hz; both outputs are active simultaneously for dual-monitor configurations — a primary content or process screen and a secondary information or control screen — driven by the integrated Intel HD Graphics 500 without a discrete GPU; audio is transmitted over both HDMI and DP alongside the Realtek ALC1150 analogue 3.5mm jacks
- FACET Expansion — Field-Configurable I/O Without Chassis Change: The front-panel FACET slot accepts modular expansion cards that add a second I/O tier to the base platform: FC3-LAN2G5 adds dual 2.5 Gbit Ethernet; FC3-LAN adds dual Gigabit Ethernet (total 4× GbE); FC3-POED adds a PoE device port; FC3-SC-2S adds two DB9 RS-232/485 serial ports; FC3-SC-3S adds two CAN bus ports; Wi-Fi 6E + Bluetooth and 4G/5G modem cards with SIM slot are also available — all swappable in the field without opening the main chassis or replacing the baseplate
- CE/FCC Certified, 5-Year Warranty, MTTF >100,000 Hours, Extended DC Input: CE (EMC and Safety) and FCC certification covers European and US market compliance; the 5-year system warranty and stated MTTF exceeding 100,000 hours reflect the long-lifecycle positioning of the FITLET2 platform; DC input of 9–36 V accommodates industrial 12 V and 24 V supply rails; power consumption of 5–15 W depending on load; a 12 V / 3 A (36 W) AC adapter with interchangeable EU, UK, NA and CN plugs is included; Auto-On, Wake-on-LAN, Wake-on-Timer and PXE Boot are supported as standard
FACET Expansion Options
| FACET Card | Added I/O | Application |
|---|---|---|
| FC3-LAN2G5 | 2× 2.5 Gbit Ethernet | High-throughput network appliance, SDN, firewall |
| FC3-LAN | 2× Gbit Ethernet (total: 4× GbE) | Multi-segment IoT gateway, OT/IT/management separation |
| FC3-OPLN | 1× SFP+ optical GbE | Fibre uplink, long-distance backbone connection |
| FC3-POED | 1× PoE device port + GbE | Connecting PoE-powered IP cameras, access points, sensors |
| FC3-SC-2S | 2× DB9 RS-232/485 | Modbus RTU, PLC serial, multi-device serial gateway |
| FC3-SC-3S | 2× DB9 CAN bus | Vehicle CAN, industrial CAN automation, OBD-II |
| Wi-Fi 6E + BT | Intel AX210 wireless + Bluetooth | Wireless IoT gateway, Wi-Fi 6E backhaul, BLE sensor hub |
| 4G/5G Modem | Sierra EM7421 (4G) / Telit FN990 (5G) | Cellular backhaul at remote or mobile sites |
Application Use Cases
Industrial IoT Gateway and Protocol Converter
The FITLET2-CJ3455-D16-M512S bridges legacy serial-protocol field devices and modern IP-based IoT platforms from a chassis smaller than a paperback book. The onboard RS-232 port connects directly to Modbus RTU instruments, barcode readers and serial PLCs; the dual Intel I211 GbE ports carry MQTT, OPC UA or REST data to the IT infrastructure network on one interface whilst maintaining isolation from the field device network on the other; and a FACET dual-GbE or serial card expands connectivity to cover additional serial or Ethernet protocols without any additional enclosure hardware. The 16 GB DDR3L and 512 GB SSD provide sufficient memory and storage to run Node-RED, Python data normalisation pipelines, a local MQTT broker and an OPC UA server concurrently without resource contention.
Edge Computing Node for Distributed Analytics
Deploying compute at the network edge — close to sensors, cameras or machines — reduces the bandwidth and latency associated with cloud-only analytics architectures. The FITLET2-CJ3455-D16-M512S runs local inference, anomaly detection and data aggregation workloads on the quad-core Celeron J3455 and 16 GB of RAM, pre-filtering and summarising data before forwarding results to a central server or cloud platform. The 512 GB SSD stores historical datasets, trained model files and rolling logs locally for off-network operation during WAN outages. The compact 112 × 84 × 34 mm chassis installs inside existing field enclosures, DIN-rail panels and junction boxes where a standard mini-ITX or NUC-style system would not fit.
Digital Signage Controller and Kiosk Back-End
Dual 4K-capable display outputs — HDMI and mini-DisplayPort — drive two independent screens for digital signage installations requiring separate content zones, a public-facing display and a back-office management screen, or a main display and a customer interaction panel. Intel HD Graphics 500 hardware video decode handles H.264 and H.265 content playback at 4K resolution without burdening the Celeron J3455 processor, leaving CPU cycles available for content management software and peripheral device handling. The fanless silent operation is essential in quiet retail, hospitality and public-sector environments where fan noise is unacceptable, and the 350 g chassis can be VESA-mounted directly behind a monitor without a separate rack or floor-standing enclosure.
Compact Network Security Appliance
Running pfSense, OPNsense, Untangle or a custom Linux firewall distribution on the FITLET2-CJ3455-D16-M512S, security engineers deploy a capable network appliance in a footprint that fits inside a wall-mount network box or attached directly to a DIN-rail enclosure. Dual Intel I211 GbE ports serve as WAN and LAN interfaces in a baseline configuration; adding the FC3-LAN2G5 FACET card upgrades both additional ports to 2.5 Gbit, enabling a four-port 2.5 GbE firewall that can saturate a gigabit WAN connection without CPU-based forwarding bottlenecks. VT-x and VT-d virtualisation support enables virtual machine segmentation of firewall, DNS and IDS/IPS services onto isolated virtual network interfaces.
Remote Terminal Unit and Telemetry Node
The extended DC 9–36 V input range covers both 12 V and 24 V solar-charged battery systems, making the FITLET2-CJ3455-D16-M512S suitable for off-grid and remote telemetry installations in utilities monitoring, environmental sensing and infrastructure management. Wake-on-LAN and Wake-on-Timer allow the unit to power on only for scheduled data collection and transmission cycles, minimising power consumption between events. A FACET 4G/LTE modem card provides cellular backhaul where fixed network connectivity is unavailable, and the onboard RS-232 port connects to RTU-compatible field instruments using standard Modbus RTU protocol directly from the compact chassis.
Why Choose the FITLET2-CJ3455-D16-M512S
Maximum RAM at Purchase — No Post-Delivery Upgrade Required
The FITLET2 platform supports a single SO-DIMM slot with a maximum capacity of 16 GB. This specific configuration ships with 16 GB DDR3L already installed, meaning the unit arrives at the deployment site at full memory specification. For procurement teams managing large batches of field-deployed units, this eliminates the post-procurement upgrade step — memory installation, testing and re-imaging — that adds cost and lead time when units are ordered with less RAM and upgraded later. The 512 GB SSD similarly exceeds the storage typically specified for a micro-PC in this class, reducing the likelihood of storage capacity becoming a constraint as application data accumulates over the system's operating lifetime.
FACET — A Modular Expansion System That Survives Application Changes
Field-deployed embedded PCs frequently encounter changed connectivity requirements after initial installation: a new protocol is added to the gateway, a cellular backhaul requirement emerges at a previously wired site, or a CAN bus device is added to the field equipment. On most compact embedded PCs, a connectivity requirement that exceeds the built-in I/O means replacing the unit entirely. On the FITLET2, the FACET slot allows the connectivity profile to be changed by swapping one small card — from dual GbE to serial RS-485, from Wi-Fi to 4G modem — in minutes, with the same chassis, the same cabling to the base ports, and the same OS image. This adaptability across a 5-year operating lifecycle has a direct impact on total cost of ownership at scale.
5-Year Warranty and 100,000-Hour MTTF — Industrial Lifecycle in a Consumer Footprint
The FITLET2 is unusual in the micro-PC category in offering a 5-year warranty and quoting MTTF exceeding 100,000 hours — metrics associated with industrial-grade embedded controllers rather than compact consumer PCs. Fanless convection cooling through the die-cast aluminium housing eliminates the dominant failure mode of fan-based systems; the absence of vents eliminates particulate ingress. For deployments in locations where physical access for replacement is difficult or expensive — ceiling voids, kiosk interiors, utility cabinets, vehicle installations — the reliability and warranty coverage of the FITLET2 reduces the expected cost of field service interventions over the product's operating life.
Frequently Asked Questions
What does the FITLET2-CJ3455-D16-M512S SKU code mean?
The SKU identifies the pre-built configuration: CJ3455 indicates the Intel Celeron J3455 quad-core processor; D16 indicates 16 GB DDR3L SODIMM installed (the maximum supported capacity); M512S indicates a 512 GB M.2 SATA SSD. The unit ships fully assembled and ready to run — no additional memory or storage installation is required.
Can the FITLET2 be expanded with additional I/O after purchase?
Yes. The front-panel FACET card slot accepts modular expansion cards that add a second I/O tier to the base chassis, including dual 2.5 GbE or Gigabit Ethernet, SFP+ optical LAN, PoE device port, dual RS-232/485 serial, dual CAN bus, Wi-Fi 6E + Bluetooth, and 4G or 5G cellular modem modules. FACET cards are swappable in the field without opening the main chassis or replacing the bottom cover.
What is the power input range and what PSU is included?
The FITLET2-CJ3455-D16-M512S accepts an extended DC input of 9–36 V, covering both 12 V and 24 V industrial supply rails. A 12 V / 3 A (36 W) AC adapter with interchangeable NA, UK, EU and CN plug attachments is included in the box. Power consumption under load is 5–15 W depending on CPU utilisation and connected peripherals. The chassis includes a power plug twist-lock mechanism to prevent accidental disconnection.
What operating temperature range does the FITLET2 support?
The standard FITLET2 configuration operates from 0 °C to +45 °C. An extended temperature option (TE) covers −20 °C to +70 °C, and an industrial temperature option (TI) covers −40 °C to +70 °C. These temperature variants are available as build-to-order configurations from the Compulab FITLET2 configurator. Contact IPC2U to specify the required temperature option at order time.
What mounting options are available for the FITLET2?
The FITLET2 supports VESA bracket mounting (75 mm and 100 mm VESA patterns) for rear-of-monitor installation, DIN-rail bracket mounting for panel and control cabinet deployment, and standard flat surface placement. Both VESA and DIN-rail brackets are sold as optional accessories. The chassis bottom also includes threaded mounting points for custom bracket fabrication.
The Compulab FITLET2-CJ3455-D16-M512S is a ready-to-run fanless embedded micro-PC measuring 112 × 84 × 34 mm and weighing 350 g, built around the Intel Celeron J3455 quad-core processor (1.5–2.3 GHz, 10 W TDP) with 16 GB DDR3L pre-installed at maximum platform capacity and a 512 GB M.2 SATA SSD. The die-cast aluminium chassis dissipates heat through convection with no vents and no moving parts, whilst the dual Intel I211 Gigabit Ethernet controllers, HDMI 1.4, mini-DisplayPort 1.2, RS-232 serial port and four USB ports deliver the connectivity required for IoT gateway, edge computing and embedded controller deployments directly out of the box.
Beyond the standard I/O, the FITLET2 platform integrates a FACET card slot (Function And Connectivity T-card) on the front panel — a proprietary modular expansion interface that adds a second independent I/O tier: options include dual 2.5 GbE or PoE Ethernet, Wi-Fi 6E + Bluetooth, 4G/5G cellular modem, RS-232/485 or CAN bus serial, and four additional USB 2.0 ports, all without changing the chassis or baseplate. Combined with a 5-year warranty, MTTF exceeding 100,000 hours and CE/FCC certification, the FITLET2-CJ3455-D16-M512S is a platform suited to long-lifecycle deployments in space-constrained industrial, retail and infrastructure environments.
Key Features
- Intel Celeron J3455 Quad-Core 2.3 GHz — Fanless at 10 W TDP: Four 64-bit Apollo Lake cores with a burst frequency of 2.3 GHz and 10 W TDP fit inside the 112 × 84 × 34 mm die-cast aluminium chassis through convection cooling only — no fan, no heatsink fins exposed, no vents; Intel HD Graphics 500 drives both display outputs simultaneously and provides hardware H.264 and H.265 video decode for digital signage and video analytics applications; VT-x and VT-d virtualisation support enables hypervisor deployments and virtual network appliance configurations
- 16 GB DDR3L — Maximum Platform Capacity, Pre-Installed: This configuration ships with 16 GB DDR3L-1866 in the single SO-DIMM slot, which is the maximum memory capacity supported by the FITLET2 platform; having maximum RAM pre-installed means no post-delivery upgrade is required for applications that use local in-memory databases, multiple concurrent virtual machines, large-dataset edge analytics or memory-intensive protocol gateway stacks — the unit is deployment-ready at maximum specification
- 512 GB M.2 SATA SSD — Substantial Local Storage in a 112 mm Chassis: The 512 GB M.2 SATA drive provides sufficient capacity for OS installation, application stack, local historian data and edge analytics model files within the M.2 2242/2260 slot; storage is upgradeable — the M.2 slot supports SATA 3.0 drives up to 2260 form factor, and a 2.5" SATA drive can be added through a dedicated FACET card option for deployments requiring multi-drive redundancy or additional capacity
- Dual Intel I211 Gigabit Ethernet — WoL, PXE Boot and Network Teaming: Both LAN ports use the Intel I211 controller, providing Wake-on-LAN, PXE network boot and 802.3ad link aggregation (teaming) alongside standard GbE; two independent NICs allow physical separation of management, control and data network interfaces — a common requirement for IoT gateway deployments where OT device traffic must be isolated from IT management traffic on separate network segments without VLAN configuration
- HDMI 1.4 and Mini-DisplayPort 1.2 — Dual Independent 4K Display Output: HDMI 1.4 supports resolutions up to 3840 × 2160 @ 30 Hz; mini-DisplayPort 1.2 supports up to 3840 × 2160 @ 30 Hz; both outputs are active simultaneously for dual-monitor configurations — a primary content or process screen and a secondary information or control screen — driven by the integrated Intel HD Graphics 500 without a discrete GPU; audio is transmitted over both HDMI and DP alongside the Realtek ALC1150 analogue 3.5mm jacks
- FACET Expansion — Field-Configurable I/O Without Chassis Change: The front-panel FACET slot accepts modular expansion cards that add a second I/O tier to the base platform: FC3-LAN2G5 adds dual 2.5 Gbit Ethernet; FC3-LAN adds dual Gigabit Ethernet (total 4× GbE); FC3-POED adds a PoE device port; FC3-SC-2S adds two DB9 RS-232/485 serial ports; FC3-SC-3S adds two CAN bus ports; Wi-Fi 6E + Bluetooth and 4G/5G modem cards with SIM slot are also available — all swappable in the field without opening the main chassis or replacing the baseplate
- CE/FCC Certified, 5-Year Warranty, MTTF >100,000 Hours, Extended DC Input: CE (EMC and Safety) and FCC certification covers European and US market compliance; the 5-year system warranty and stated MTTF exceeding 100,000 hours reflect the long-lifecycle positioning of the FITLET2 platform; DC input of 9–36 V accommodates industrial 12 V and 24 V supply rails; power consumption of 5–15 W depending on load; a 12 V / 3 A (36 W) AC adapter with interchangeable EU, UK, NA and CN plugs is included; Auto-On, Wake-on-LAN, Wake-on-Timer and PXE Boot are supported as standard
FACET Expansion Options
| FACET Card | Added I/O | Application |
|---|---|---|
| FC3-LAN2G5 | 2× 2.5 Gbit Ethernet | High-throughput network appliance, SDN, firewall |
| FC3-LAN | 2× Gbit Ethernet (total: 4× GbE) | Multi-segment IoT gateway, OT/IT/management separation |
| FC3-OPLN | 1× SFP+ optical GbE | Fibre uplink, long-distance backbone connection |
| FC3-POED | 1× PoE device port + GbE | Connecting PoE-powered IP cameras, access points, sensors |
| FC3-SC-2S | 2× DB9 RS-232/485 | Modbus RTU, PLC serial, multi-device serial gateway |
| FC3-SC-3S | 2× DB9 CAN bus | Vehicle CAN, industrial CAN automation, OBD-II |
| Wi-Fi 6E + BT | Intel AX210 wireless + Bluetooth | Wireless IoT gateway, Wi-Fi 6E backhaul, BLE sensor hub |
| 4G/5G Modem | Sierra EM7421 (4G) / Telit FN990 (5G) | Cellular backhaul at remote or mobile sites |
Application Use Cases
Industrial IoT Gateway and Protocol Converter
The FITLET2-CJ3455-D16-M512S bridges legacy serial-protocol field devices and modern IP-based IoT platforms from a chassis smaller than a paperback book. The onboard RS-232 port connects directly to Modbus RTU instruments, barcode readers and serial PLCs; the dual Intel I211 GbE ports carry MQTT, OPC UA or REST data to the IT infrastructure network on one interface whilst maintaining isolation from the field device network on the other; and a FACET dual-GbE or serial card expands connectivity to cover additional serial or Ethernet protocols without any additional enclosure hardware. The 16 GB DDR3L and 512 GB SSD provide sufficient memory and storage to run Node-RED, Python data normalisation pipelines, a local MQTT broker and an OPC UA server concurrently without resource contention.
Edge Computing Node for Distributed Analytics
Deploying compute at the network edge — close to sensors, cameras or machines — reduces the bandwidth and latency associated with cloud-only analytics architectures. The FITLET2-CJ3455-D16-M512S runs local inference, anomaly detection and data aggregation workloads on the quad-core Celeron J3455 and 16 GB of RAM, pre-filtering and summarising data before forwarding results to a central server or cloud platform. The 512 GB SSD stores historical datasets, trained model files and rolling logs locally for off-network operation during WAN outages. The compact 112 × 84 × 34 mm chassis installs inside existing field enclosures, DIN-rail panels and junction boxes where a standard mini-ITX or NUC-style system would not fit.
Digital Signage Controller and Kiosk Back-End
Dual 4K-capable display outputs — HDMI and mini-DisplayPort — drive two independent screens for digital signage installations requiring separate content zones, a public-facing display and a back-office management screen, or a main display and a customer interaction panel. Intel HD Graphics 500 hardware video decode handles H.264 and H.265 content playback at 4K resolution without burdening the Celeron J3455 processor, leaving CPU cycles available for content management software and peripheral device handling. The fanless silent operation is essential in quiet retail, hospitality and public-sector environments where fan noise is unacceptable, and the 350 g chassis can be VESA-mounted directly behind a monitor without a separate rack or floor-standing enclosure.
Compact Network Security Appliance
Running pfSense, OPNsense, Untangle or a custom Linux firewall distribution on the FITLET2-CJ3455-D16-M512S, security engineers deploy a capable network appliance in a footprint that fits inside a wall-mount network box or attached directly to a DIN-rail enclosure. Dual Intel I211 GbE ports serve as WAN and LAN interfaces in a baseline configuration; adding the FC3-LAN2G5 FACET card upgrades both additional ports to 2.5 Gbit, enabling a four-port 2.5 GbE firewall that can saturate a gigabit WAN connection without CPU-based forwarding bottlenecks. VT-x and VT-d virtualisation support enables virtual machine segmentation of firewall, DNS and IDS/IPS services onto isolated virtual network interfaces.
Remote Terminal Unit and Telemetry Node
The extended DC 9–36 V input range covers both 12 V and 24 V solar-charged battery systems, making the FITLET2-CJ3455-D16-M512S suitable for off-grid and remote telemetry installations in utilities monitoring, environmental sensing and infrastructure management. Wake-on-LAN and Wake-on-Timer allow the unit to power on only for scheduled data collection and transmission cycles, minimising power consumption between events. A FACET 4G/LTE modem card provides cellular backhaul where fixed network connectivity is unavailable, and the onboard RS-232 port connects to RTU-compatible field instruments using standard Modbus RTU protocol directly from the compact chassis.
Why Choose the FITLET2-CJ3455-D16-M512S
Maximum RAM at Purchase — No Post-Delivery Upgrade Required
The FITLET2 platform supports a single SO-DIMM slot with a maximum capacity of 16 GB. This specific configuration ships with 16 GB DDR3L already installed, meaning the unit arrives at the deployment site at full memory specification. For procurement teams managing large batches of field-deployed units, this eliminates the post-procurement upgrade step — memory installation, testing and re-imaging — that adds cost and lead time when units are ordered with less RAM and upgraded later. The 512 GB SSD similarly exceeds the storage typically specified for a micro-PC in this class, reducing the likelihood of storage capacity becoming a constraint as application data accumulates over the system's operating lifetime.
FACET — A Modular Expansion System That Survives Application Changes
Field-deployed embedded PCs frequently encounter changed connectivity requirements after initial installation: a new protocol is added to the gateway, a cellular backhaul requirement emerges at a previously wired site, or a CAN bus device is added to the field equipment. On most compact embedded PCs, a connectivity requirement that exceeds the built-in I/O means replacing the unit entirely. On the FITLET2, the FACET slot allows the connectivity profile to be changed by swapping one small card — from dual GbE to serial RS-485, from Wi-Fi to 4G modem — in minutes, with the same chassis, the same cabling to the base ports, and the same OS image. This adaptability across a 5-year operating lifecycle has a direct impact on total cost of ownership at scale.
5-Year Warranty and 100,000-Hour MTTF — Industrial Lifecycle in a Consumer Footprint
The FITLET2 is unusual in the micro-PC category in offering a 5-year warranty and quoting MTTF exceeding 100,000 hours — metrics associated with industrial-grade embedded controllers rather than compact consumer PCs. Fanless convection cooling through the die-cast aluminium housing eliminates the dominant failure mode of fan-based systems; the absence of vents eliminates particulate ingress. For deployments in locations where physical access for replacement is difficult or expensive — ceiling voids, kiosk interiors, utility cabinets, vehicle installations — the reliability and warranty coverage of the FITLET2 reduces the expected cost of field service interventions over the product's operating life.
Frequently Asked Questions
What does the FITLET2-CJ3455-D16-M512S SKU code mean?
The SKU identifies the pre-built configuration: CJ3455 indicates the Intel Celeron J3455 quad-core processor; D16 indicates 16 GB DDR3L SODIMM installed (the maximum supported capacity); M512S indicates a 512 GB M.2 SATA SSD. The unit ships fully assembled and ready to run — no additional memory or storage installation is required.
Can the FITLET2 be expanded with additional I/O after purchase?
Yes. The front-panel FACET card slot accepts modular expansion cards that add a second I/O tier to the base chassis, including dual 2.5 GbE or Gigabit Ethernet, SFP+ optical LAN, PoE device port, dual RS-232/485 serial, dual CAN bus, Wi-Fi 6E + Bluetooth, and 4G or 5G cellular modem modules. FACET cards are swappable in the field without opening the main chassis or replacing the bottom cover.
What is the power input range and what PSU is included?
The FITLET2-CJ3455-D16-M512S accepts an extended DC input of 9–36 V, covering both 12 V and 24 V industrial supply rails. A 12 V / 3 A (36 W) AC adapter with interchangeable NA, UK, EU and CN plug attachments is included in the box. Power consumption under load is 5–15 W depending on CPU utilisation and connected peripherals. The chassis includes a power plug twist-lock mechanism to prevent accidental disconnection.
What operating temperature range does the FITLET2 support?
The standard FITLET2 configuration operates from 0 °C to +45 °C. An extended temperature option (TE) covers −20 °C to +70 °C, and an industrial temperature option (TI) covers −40 °C to +70 °C. These temperature variants are available as build-to-order configurations from the Compulab FITLET2 configurator. Contact IPC2U to specify the required temperature option at order time.
What mounting options are available for the FITLET2?
The FITLET2 supports VESA bracket mounting (75 mm and 100 mm VESA patterns) for rear-of-monitor installation, DIN-rail bracket mounting for panel and control cabinet deployment, and standard flat surface placement. Both VESA and DIN-rail brackets are sold as optional accessories. The chassis bottom also includes threaded mounting points for custom bracket fabrication.
Get a Quote
