Time Relay Count up/down,0.1%FS; Range:0.01S-999999H; ... customized, eg. motor step control.4, Standard RS232/RS485 communication interface, MODBUS RTU protocol. Can connect to other equipments /PC /LC ... Meter, Counter, Tacho Meter, Frequency Meter, flowmeter, Timer,Timer Relay, Solid State Relay, Proximity Sensor, Pressure sensor, load cell sensor, KNE KSC ...