... carry; Widely used in industrial facture-debugging,factory/lab/PC remote control system,etc..2,Accuracy: 0.05% , 5 digital ... RTU protocol.Can connect to other equipments/PC/PLC for remote control.5,Power supply: regular: 90-260VAC/DC, Others: ... Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor ...