... no Ethernet no Data logging optional Interface 1 B-type USB ,1 Audio input/output ,1 RS232 & 1 RS485 ... based transmissionØ Remote configuration via GPRS and user friendly eSmsConfig softwareØ Firmware upgrade via serial portØ Configurable filtration for digital ... on/ off-delays, pulse relay ,counters ,Watchdog function ,PI controller etc..Ø Logic functions-AND, OR, NOT, XOR……Ø Standard configure soft ...