NEW FEATURE: Be to set threshold value for Voltage, Current and Power, Buzzer Alarm and App Alarm when it reaches the threshold value. App Set threshold value for Voltage, Current and Power, when the value reaches the value , the device can buzzer alarm and App can send alarm message. Rated Voltage:100-240V AC 50/60Hz Measurable Current Range: 0.2A-80A WiFi Frequency: 2.4GHZ (Not Support 5Ghz) Ambient Temperature Range:-10C - 55C Specification:1CT Colour:White Material:plastic Package Contents: 1 x Tuya Smart WiFi Energy Meter(Due to different product batches, the appearance , which does not affect the use) 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.