CH-M1C1Z2 CDMA Modem is a dual-band wireless modem designed specifically for low-data-rate communications such as SMS, CSD, and dial-up Internet. As an industrial-grade wireless modem, it provides a sturdy metal shell design, standard data serial interface and SIM card slot. As an independent plug-and-play device, it provides standard generic power interface, antenna interface, and data interface. Considering that as a specialized CDMA industrial-grade communication device with a sturdy shell, CH-M1C1Z2 CDMA Modem is an ideal choice for M2M applications with low data transmission. It can be widely used in commercial fields: meter reading, remote equipment maintenance, transportation logistics, traffic systems, vending machines, security and property management.
The CH-M1C1Z2 CDMA Modem is designed for low‑data M2M applications such as meter reading, logistics, transportation, security and water management. It features a rugged metal enclosure, standard SIM slot, and multiple serial interfaces for easy integration.
Key features include support for SMS, CSD, USSD, and various CDMA protocols, low power consumption (DC5‑25 V), and operation over a wide temperature range. The modem offers RS‑232, RS‑485 and TTL interfaces, as well as antenna options for flexible deployment. This manual is written in Chinese.
| Frequency Bands | 800 MHz (Send 824‑849 MHz, Receive 869‑894 MHz) |
|---|---|
| Output Power | 1 W @ -75 dBm |
| Supply Voltage | DC 5 V – 25 V |
| Operating Temperature | -30 °C to +75 °C |
| Storage Temperature | -40 °C to +85 °C |
| Humidity Range | 5 % – 95 % RH |
| Dimensions | 75 mm × 50/72 mm × 16 mm |
| Weight | 200 g |
| Serial Interfaces | RS‑232 / RS‑485 / TTL |
| Antenna Connector | 500 Ω SMA Female |
| SIM Card Holder | Mini‑SIM, 1.8 V/3.3 V |
| Warranty | 1 Year |
It supports the 800 MHz band with send frequencies of 824‑849 MHz and receive frequencies of 869‑894 MHz.
The modem operates from a DC supply of 5 V to 25 V.
It provides RS‑232, RS‑485 and TTL serial interfaces, accessible via a DB9 V.24/V.28 sub‑D socket.
The modem measures 75 mm × 50/72 mm × 16 mm and weighs approximately 200 g.