PZ666-2S series three-phase digital Voltmeter is the new generation of programmable instrument, mainly applied to real-time measurement and indication for the phase voltage in the three-phase electrical circuit. Characteristics: Real-time measurement and indication for the phase current and voltage value of the power circuit. Extensible analog output function, current range 4~20mA, 0~20 mA,0~10 mA selectable. Extensible relay switch output function, upper and lower alarm output can be realized. Extensible RS485 communication interface, according to MODBUS-RTU communication protocol, and baud rate can be set. Package Includes: 1 x PZ666-2S 380V series Three Phase Digital Voltmeter