The CH-M1G2N1 is a compact GPRS modem designed for low‑data‑rate M2M applications such as utility metering, oil‑field monitoring, logistics, and public‑safety systems. It offers a rugged metal housing, standard SIM slot, and multiple communication interfaces.
Key features include dual‑band GSM/EGSM operation, low power consumption (5‑25 V), RS‑232/RS‑485/TTL serial ports, and support for GPRS, SMS, CSD, and USSD. The datasheet lists detailed electrical, mechanical, and performance specifications for integration into various industrial solutions. This manual is written in Chinese.
| Frequency Bands | Dual‑Band EGSM 900 MHz / DCS 1800 MHz |
|---|---|
| Output Power (EGSM900) | Class 4 (2 W) |
| Output Power (GSM1800) | Class 1 (1 W) |
| Supply Voltage | DC 5‑25 V |
| Operating Temperature | -40 °C to +80 °C |
| Storage Temperature | -45 °C to +85 °C |
| Humidity Range | 0 %‑95 % RH |
| Weight | 200 g |
| GPRS Downlink Speed | 85.6 kbps |
| GPRS Uplink Speed | 42.8 kbps |
| CSD Speed | 14.4 kbit/s |
| Data Interface | RS‑232 / RS‑485 / TTL |
| Antenna Connector | 500 Ω SMA Female |
| SIM Card Holder | Mini‑SIM, 1.8 V/3.3 V |
It operates from DC 5 V up to DC 25 V.
The modem supports dual‑band EGSM 900 MHz and DCS 1800 MHz.
Yes, it provides GPRS Multi‑Slot Class 10 connectivity.