The RemoDAQ-8551 GPRS DTU provides remote data transmission over the China Mobile GPRS network, eliminating the need for licensed frequencies and dedicated hardware. It includes a full TCP/IP stack with PPP support, RS232/485 interfaces, and a built‑in watchdog for reliable industrial communication.
The manual details product features, installation steps, networking options, command‑line configuration, and SMS functionality, with safety warnings and hardware specifications such as a 7 V‑36 V DC power input and three status LEDs. This manual is written in Chinese.
| Power input | 7 V‑36 V DC |
|---|---|
| Status indicator LEDs | 3 LEDs for power, network, and transmission status |
| Serial interfaces | Full compatibility with RS232 and RS485 |
| User data cache | 60 KB |
| Configuration switches | Two‑position DIP switch for mode selection |
The power LED stays on when the device is supplied, the network LED lights when GPRS coverage is detected, and the send LED flashes when data is being transmitted.
It accepts a wide DC input from 7 V to 36 V.
The device fully supports both RS232 and RS485 communication standards.