... : I,U,F,P,Q,S,PF,kWh, kVarh - Network: Single-phase - Voltage: AC 120V, 230V, 400V (programmable); overload: 480V (continuous); 800V ... : < 0.2VA 3. Options- Communication (/C) : RS485 (Modbus-RTU); 1 start bit, 8 data bit, 1 stop bit, no parity, speed ... voltage inputs and options you need. For example: Need the single phase 72 model ammeter with RS485 communication, 2DI/2DO and LCD ...