Intelligent SMS Alarm Controller GPRS/GSM Tri-Band 900/1800/1900 MHz modem, WT-25+55, CPU ARM7, 72 MHz, 2x RS-232, 10x Digital Input, 2x Digital Output, DIN-Rail, converter

Intelligent Active GPRS Remote Terminal Unit, Quad-band GSM 850/900/1800/1900 MHz modem, CPU 72MHz, 6x digital input, 2x digital output, 1x analog input, 1x RS-232, 1x RS-485, SD interface, GPS, DIN-Rail, converter

Intelligent Active GPRS Remote Terminal Unit with GPS, Quad-band 850/900/1800/1900 MHz modem, CPU 72MHz, 6x digital input, 2x digital output, 1x analog input, 1x RS-232, 1x RS-485, SD interface, DIN-Rail, converter

Intelligent SMS/GSM Alarm Controller, GPRS/GSM Tri-Band 900/1800/1900 MHz modem, 6x Digital Input Channels, 2x Digital Output Channles, 1x Analog Input, 1x RS-232, 1x RS-232/485, MicroSD, DIN-Rail, converter