... for : Remote Control,Monitoring & Alarming!x-Messenger- Expandable GSM/GPRS PLC incorporates a wide range of CPUs, expansions, various ... accessories and software, specially designed for GSM/GPRS wireless systems being used for remote measurements, data logging, ... DC) (0…20mA) ,(PT100) inputs built-in the module , make it possible to have direct connection of sensors, which ...