... / off-delays, pulse relay ,counters ,Watchdog function ,PI controller etc..Ø Logic functions-AND, OR, NOT, XOR……Ø Standard configure soft& Customized soft ... Ø 1 RS232, 1USB&1RS485 ports availableØ Optional Ethernet InterfaceØ Optional speaker built-inØ 1 Socket of telephone crystal plug & 1 Audio ...