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: 200MS/time Protection degree: IP20 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) Color: White Material: ABS Package contents: 1 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.