Rated Voltage:100-240V AC 50/60HZ Wireless Protocol:ZigBee mounting:DIN Rail 35mm(EN 60715) Ambient Temperature Range:-10C - 55C In the APP can display: Today Ele(KWh) Current Ele(mA) Current Power(W) Current Voltage(V) Total Ele(KWh) Note before order: The meter needs to be connected to a ZigBee gateway to function properly.It only support the current range 0.2-50A device measurement. Measurable Current Range:0.2-50A Colour:White Material:PC Size:92x65mm Package Contents: 1 * Smart 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.