... cost of building system. Hence, it can directly work with humidity sensors, water level sensor, pressure transducers, flow sensors ... Communication protocol Modbus RTU&ASCII Expansion yes RTC yes LCD display with keypad Optional Alarming mode SMS,Ring ,email,voice/ ... on/ off-delays, pulse relay ,counters ,Watchdog function ,PI controller etc..Ø Logic functions-AND, OR, NOT, XOR……Ø Standard configure ...