The CH-M1C1Z2 CDMA Modem is designed for low‑data‑rate M2M applications such as meter reading, logistics, transportation, security and water management. It features a rugged metal housing, standard SIM slot, and multiple communication interfaces.
Key specifications include 800 MHz band operation (824‑849 MHz uplink, 869‑894 MHz downlink), 1 W output power, DC5‑25 V supply, RS‑232/RS‑485/TTL data ports, and compact dimensions (75 mm × 50/72 mm × 16 mm, 200 g). The package contains the modem, DB9 serial cable, 9 V 1 A power adapter and antenna, and it is covered by a 1‑year warranty. This manual is written in Chinese.
| Frequency Bands | 800 MHz |
|---|---|
| Uplink Frequency | 824‑849 MHz |
| Downlink Frequency | 869‑894 MHz |
| Output Power | 1 W @ -75 dBm |
| Supply Voltage | DC5‑25 V |
| Operating Temperature | -30 °C to +75 °C |
| Storage Temperature | -40 °C to +85 °C |
| Humidity Range | 5 % to 95 % RH |
| Dimensions | 75 mm × 50/72 mm × 16 mm |
| Weight | 200 g |
| Antenna Connector | 500 Ω SMA Female |
| Power Supply Connector | 5.5 mm / 2.5 mm |
| SIM Card Holder | Mini‑SIM, 1.8/3.3 V |
| Serial Port | V24 / V.28 on 9‑pin sub‑D socket |
| Data Interface | RS‑232 / RS‑485 / TTL |
| Warranty | 1 Year |
It operates on the 800 MHz band with an uplink of 824‑849 MHz and a downlink of 869‑894 MHz.
The package contains the CH-M1C1Z2 modem, a DB9 serial cable, a 9 V 1 A power adapter, and an antenna.