1. This product adopts large-scale integrated circuits and dedicated to measuring electrical energy to measurement accuracy and reliability. 2. Voltage signal power supply, no auxiliary power supply is required. 3. Save the accumulated value of electrical energy when power is off. 4. 5+1 bit wide temperature LCD display. 5. 35mm standard guide rail installation method The overall power consumption is less than 2W/5VA. Rated voltage: AC 220V Working current: 5 (60) A Rated frequency: 60Hz Environmental temperature:- 10-50 Accuracy: 1 Power consumption:Less than 2W/5A Power: 17000W Screen display: Loop display Color: As Shown Material: plastic Package Contents: 1 x energy 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.