Rated Voltage:100-240V AC 50/60Hz Measurable Current Range: 0.2A-80A Protocal: ZigBee WiFi Frequency: 2.4GHZ (Not Support 5Ghz) Ambient Temperature Range:-10°C ~ 55°C Power for Channel A and B Separately(W) Current(mA) Voltage(V), Power factor, and Frequency(Hz) Electricity Statistic for each channel in Forward and Reverse direction. Hourly Elec. (KWh) Daily Elec. (KWh), Monthly Elec. (KWh) Yearly Elec. (KWh) type:2 Channels - 2CT Colour:Blue Material:plastic Package Contents: 1 x Tuya Smart ZigBee 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.