User manual for the ZLG ZWG-23DP industrial GPRS DTU module, covering specifications, configuration and application examples.
The ZWG-23DP is an industrial‑grade embedded GPRS DTU module produced by ZLG. It provides a compact form factor (66 mm × 48 mm) and supports both data transparency and protocol conversion, making it easy to add wireless GPRS communication to user devices.
The manual describes the module’s hardware layout, pin assignments, power requirements, performance parameters, configuration methods (local and remote), and typical application scenarios such as point‑to‑point and server‑client connections. This manual is written in Chinese.
| Mobile Station Type | CLASS B |
|---|---|
| Network Type | GPRS |
| Multi‑slot Type | CLASS 10 |
| Frequency Bands | 900/1800/1900 MHz |
| Downlink Max Rate | 85.6 Kbps |
| Uplink Max Rate | 42.8 Kbps |
| SIM Card Voltage | 3 V, 1.8 V |
| Antenna Interface | 50Ω / SMA (female) |
| Serial Port Level | TTL |
| Serial Baud Rate | 300 ~ 115200 bps |
| Power Supply | DC 3.8 V ~ 4.5 V |
| Maximum Current | ≤300 mA |
| Standby Current | ≤30 mA |
| Sleep Current | ≤13 mA |
| Power‑off Current | ≤1 mA |
| Operating Temperature | -25 °C ~ +70 °C |
| Storage Temperature | -40 °C ~ +80 °C |
| Humidity Range | 0‑95 % non‑condensing |
The module operates from 3.8 V to 4.5 V DC.
Remote configuration is done via SMS or the remote graphical interface, allowing settings such as APN, server parameters and reboot commands.
The module measures 66 mm × 48 mm, roughly the size of a business card.