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.