Measure display 3 Phase AC Power Voltage. Type:SDM010 three Phase Voltage Meter Terminal for wiring: 3L+3N Measurement voltage range:AC 80V~500V Measuring accuracy:1% Measuring rate: Greater than 200MS/time Protection degree: IP 20 Electrical Life: ≥15000 hours Working Conditions: temperature(with daily average ≤35℃ ) -5℃~+40℃ Storage temperature: -25℃~+70℃ Air relative humidity: 1-80%(no condensation) Working pressure: 80~160Kpa Mounting: DIN rail (18mm) Colour: White Material: ABS Package Contents: 2 x 3 phase Din Rail Voltage meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.