The Seriallink SLK-R4008 industrial 4G/3G router user manual provides product overview, hardware installation, and configuration instructions.
The SLK-R4008 series is an industrial‑grade 4G/3G router built on a 32‑bit communication processor, Linux‑based OS, and supports a wide range of cellular bands. It is designed for harsh environments with a metal enclosure, IP30 rating, and operation from –30 °C to +85 °C.
The manual covers hardware installation—including antenna, SIM card, and power connections—as well as common configuration steps such as LAN/WAN setup, Wi‑Fi settings, VPN client configuration, firmware upgrade, and firewall rules. LED indicators, reset procedures, and troubleshooting tips are also described. This manual is written in Chinese.
| Power Input Voltage | DC6‑28V |
|---|---|
| Wi‑Fi Speed | 300 Mbps |
| Power Consumption | 260 mA‑500 mA @12 VDC |
| Dimensions (L×W×H) | 178 mm × 102 mm × 28 mm |
| Weight | 600 g |
| Operating Temperature | -20 °C to 65 °C |
| Storage Temperature | -30 °C to 70 °C |
| LAN Ports | 4 × 10/100 M |
| WAN Port | 1 × 10/100 M |
| SIM Card Slots | 1 (standard SIM) |
| USB Port | 1 × USB 2.0 |
| CPU | 32‑bit high‑performance communication processor |
| Memory (Flash/RAM) | 16 MB / 128 MB |
| Operating System | Embedded Linux (latest version) |
Press and hold the reset button with a pointed object for more than 10 seconds, then release; the router will restart and restore factory defaults.
The router accepts a wide input voltage range from DC 6 V to DC 28 V, with a default 12 V/1 A adapter.
The router provides four 10/100 M Ethernet LAN ports.
Insert the SIM card with the metal contacts facing outward, align it with the slot, and push until the card holder is flush with the router’s chassis.