The CH-M1G2N1 GPRS Modem is a dual-frequency wireless modem designed specifically for low-data communication such as SMS, CSD, and dial-up internet access. As an industrial-grade wireless modem, it features a sturdy metal casing, standard data serial interface, and SIM card slot. It can be widely used in commercial applications.
The CH-M1G2N1 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, supports SMS, CSD, and USSD, and provides standard interfaces.
The datasheet details its dual‑band GSM operation, power supply range, environmental limits, and connector options, along with performance figures for GPRS and CSD data rates. This manual is written in Chinese.
| Frequency Bands | Dual‑Band EGSM 900 MHz / DCS 1800 MHz |
|---|---|
| Output Power | 2 W (EGSM900) / 1 W (GSM1800) |
| Supply Voltage | DC 5 V – 25 V |
| Operating Temperature | -40 °C to +80 °C |
| Storage Temperature | -45 °C to +85 °C |
| Humidity Range | 0 % – 95 % RH |
| Dimensions | 75 mm × 50/72 mm × 16 mm |
| Weight | 200 g |
| GPRS Downlink Speed | 85.6 kbps |
| GPRS Uplink Speed | 42.8 kbps |
| CSD Data Rate | 14.4 kbit/s |
It operates on dual‑band EGSM 900 MHz and DCS 1800 MHz.
The modem accepts a DC supply between 5 V and 25 V.
It can operate from –40 °C up to +80 °C.