... Up to 3 alarms RS232/RS485 interface DH8 series True Value Voltage & Ampere MeterDH8/MDH8 double/3-line display. Features:1 ... user;high sampling speed(>8times/sec)digits holding or peak value display function.3) Output: Isolated 4-20mA output for any ... , Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ,Pressure sensor ,load cell sensor, KNE KSC ...