Two different jobs, both served from inside the enclosure. The SIM card slot identifies the 4G module on the mobile network: with the module fitted and a data SIM from the local operator, the box joins the network directly, which is how a remote panel, a kiosk back-box or a machine cabinet with no data run still reports its data. The TF card slot is local storage — buffering readings while the link is down, keeping a rolling log across a power cut, or holding images from an attached camera. Keeping both inside the chassis means neither card can be knocked out of a port.

Size, compute and storage headroom. All three cellular models carry SIM and TF slots. The UPC-206F is the compact one: 195 × 160 × 42.8 mm and 1.7 kg, with a Celeron J1900 standard build, four serial channels and 6 USB ports. The larger cellular models put the same slots in a 337 × 160 × 53.2 mm chassis with a 10th Gen or 12th Gen Core processor, more USB 3.0 and higher memory ceilings — for sites that process data locally before transmitting. Pick by footprint and compute, not by connectivity.

The processor generation, the memory type and the USB mix. The J1900 build (part number C8.02.01.019) ships with 4GB DDR3L and a 128GB mSATA SSD and carries 5× USB 2.0 and 1× USB 3.0. The J6412 option runs DDR4L up to 32GB and carries 2× USB 2.0 and 4× USB 3.0, which suits sites with a camera or fast storage. The serial channels, the displays, the SIM slot and the chassis are identical.

Four: 3× RS232 and 1× RS485, all on standard DB9 sockets. That is more serial connectivity than most boxes this size offer, and the RS485 channel is the one that matters on site — it is multi-drop, so a chain of meters, inverters or sensors can run on a single twisted pair instead of one cable per device. The three RS232 channels take the instruments that stayed RS232.

1× HDMI and 1× VGA, driven simultaneously. On a remote or cellular site the display output is mostly a commissioning tool: a technician plugs in a monitor, checks the application and the modem status, and leaves. Keeping VGA means the older industrial monitors and long analogue cable runs already on site still work without an adapter.

Remote and semi-attended installations where the footprint matters: kiosk back-boxes and information panels, remote pumping and metering cabinets, unmanned machine cabinets that report over cellular, telecom and utility equipment rooms, and retrofit panels where an older controller is being replaced inside an existing enclosure of limited depth.

Yes, that is the design case — but the box does not force the choice. With a 4G module and a SIM fitted it operates entirely over the mobile network; with the two Intel I210 Gigabit ports in use it runs on a wired LAN instead. Most installations use both: the wired port for the local devices and the cellular link as the route out, or as a fallback when the wired path fails.

195 × 160 × 42.8 mm and 1.7 kg, milled from high-strength aluminium alloy. Power is 12V DC on a 3-pin pluggable terminal block with 9–36V DC optional, and startup is selectable between AT and ATX. It mounts on a wall bracket or a VESA plate, which is how it usually goes into a kiosk or a panel.

It is fanless: no fan, no filter, and no air path drawing cabinet dust across the boards. Operating temperature is 0–50 ℃ as standard with −40–70 ℃ optional, storage is −10–60 ℃ and humidity is 10%–90% non-condensing. Certifications are CE, FCC and BIS to EN 55032 and EN 55035, the factory is ISO 9001:2015, and ODM covers custom BIOS, boot-on-LOGO and OEM branding.