Description: Voltage AC100-240V 50/60Hz Maximum load: 3A Working frequency: 2.412GHz -2.484GHz Radio frequency: 433Mhz Working temperature: -10 ℃+40℃<br><br>Protocol WIFI IEEE 802.11b/g Working range less than 100m IP level: IP20 Features Ultra compact body, can be installed with 98% of switch boxes Voice control: compatible with and other devices Built in Tuya official WiFi module APP remote control Fi module+RF433 Single/Dual Motor Control Timing/Countdown/Schedule Maximizing the expansion of intelligence and in Material: plastic colour: Black<br><br>Package Contents: 1 x WiFi Energy Meter<br><br>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.