1.MODBUS GPRS RTU 2.Support RTU extended protocol 3.8 Digital inputs, 4 relay outputs F2164 MODBUS GPRS RTU Technical SPECIFICATION F2164 GPRS RTU is a wireless Remote Terminal Unit(abbreviation: RTU).It has multiple functions (analog input,relay output, digital input, digital output, pulse counting and wireless data communication, etc).It adopts high-powered industrial 32 bits MCU and embedded ...