Technical specification sheet for the Yilin Si H685 series 3G/4G industrial router.
The H685 series is a compact, industrial‑grade 3G/4G router designed for embedded applications in IoT, M2M, and industrial automation. It features a high‑performance 32‑bit processor, multiple WAN options, VPN support, and a metal enclosure with IP30 protection.
The device offers extensive LTE band support, Ethernet and serial interfaces, optional Wi‑Fi, GPS, and POE power. It operates from –35 °C to +75 °C, weighs 220 g, and measures 100 mm × 60 mm × 21 mm, making it suitable for harsh environments. This manual is written in Chinese.
| CPU | Industrial‑grade 32‑bit communication processor, 580 MHz |
|---|---|
| Flash Memory | 16 MB (128 Mb), expandable to 512 MB/4 Gb |
| RAM | 64 MB (512 Mb), expandable to 256 MB/2 Gb |
| Power Input | DC 5 V – 40 V (optional 5 V–60 V) |
| Protection Rating | IP30 metal enclosure |
| Dimensions (unit) | 96 mm × 56 mm × 14 mm (PCB), 100 mm × 60 mm × 21 mm (overall) |
| Weight | 220 g (without antenna and accessories) |
| Operating Temperature | -35 °C to +75 °C |
It operates from –35 °C to +75 °C.
It uses an industrial‑grade 32‑bit communication processor running at 580 MHz.
Yes, the WAN Ethernet port can be used for POE power supply.
The router has a metal enclosure with an IP30 protection rating.