... 20mA) ,(PT100) inputs built-in the module , make it possible to have direct ... /output ,1 RS232 & 1 RS485 Communication protocol Modbus RTU&ASCII Expansion ... GSM 850/900/1800/1900 modemØ GPRS, SMS and CLIP supportØ Autonomous login into GSM/GPRS ... Pre-configured standard functions, e.g. on/ off-delays, pulse relay ,counters , ... Characters in one short messageØ Time-based and event-based SMS, Call-IN, Call-Out ...