... --Your ideal of Solution for : Remote Control,Monitoring & Alarming!x-Messenger- Expandable GSM/GPRS PLC ... Hence, it can directly work with humidity sensors, water level sensor, pressure transducers, flow sensors, smoke, gas, ... off-delays, pulse relay ,counters ,Watchdog function ,PI controller etc..Ø Logic functions-AND, OR, NOT, XOR……Ø ... -Messenger,GPRS/GSM/SMS PLC ,monitoring controller