CH-M1G2C4 GPRS Modem is a dual-band wireless Modem designed specifically for low data communication such as SMS, CSD, and dial-up networking. As an industrial-grade wireless modem, it provides a rugged metal housing design, standard serial data interface, and SIM card slot. As a stand-alone plug-and-play device, it provides standard universal power interface, antenna interface, and data interface. Considering that it is a specialized GPRS industrial-grade communication device with a rugged housing, CH-M1G2C4 GPRS Modem is an ideal choice for low data transmission M2M applications. It can be widely used in commercial fields such as meter reading, remote equipment maintenance, transportation logistics, transportation systems, vending machines, security and property management.
The CH-M1G2C4 is a compact GPRS modem designed for low‑data M2M applications such as utility metering, oil‑field monitoring, security and transportation. It features a rugged metal housing and supports SMS, CSD and voice functions.
The datasheet lists quad‑band GSM operation, 5‑25 V power supply, RS‑232/RS‑485/TTL interfaces, dimensions of 75 mm × 50/72 mm × 16 mm and a weight of 200 g. It also provides GPRS multi‑slot Class 10 connectivity with downlink up to 85.6 kbps. This manual is written in Chinese.
| Frequency Bands | Quad‑Band GSM850/EGSM900/DCS1800/PCS1900 |
|---|---|
| Output Power | Class 4 (2 W) @ EGSM900, Class 1 (1 W) @ GSM1800 |
| Operating Voltage | DC 5 V – 25 V |
| Normal Operating Temperature | -20 °C to +55 °C |
| Storage Temperature | -40 °C to +85 °C |
| Humidity Range | 30 % – 70 % RH |
| Dimensions | 75 mm × 50/72 mm × 16 mm |
| Weight | 200 g |
| GPRS Multi‑Slot Class | Class 10 |
| Downlink Speed | 85.6 kbps |
| Uplink Speed | 42.8 kbps |
| Data Interfaces | RS‑232, RS‑485, TTL |
It operates from DC 5 V to 25 V.
The modem supports Quad‑Band GSM850, EGSM900, DCS1800 and PCS1900.
It provides RS‑232, RS‑485 and TTL serial interfaces.
The modem measures 75 mm × 50/72 mm × 16 mm and weighs about 200 g.