Specifications: Working voltage: 85-250V AC. Indicator: With a signal indicator, relay pull the ligh Supports to control different voltage ranges. USB port power supply more convenient Board consumption: Less than 1W. Standby current: 80mA Standby power: Less than 0.5W. Input current: less than equal 16A; Wattage: less than equal 3500W Relay lifespan: equal 1000000 times. Electrical insulation resistance: 100M voltage: 1000V Relay maximum suction time: 15ms Relay maximum release time: 5ms Working mode: inching /self-locking, Interlock Transmission mode: Wi-Fi communication Wireless Standard: 2.4GHz, 802.11 b/g Mobile App: on Android/IOS Applicable occasions: smart home. Wifi control Control distance: infinit Enclosure Material: Fire-retardant ABS Operating temperature: -40 degrees to +70 degrees Operating Humidity 40percent ~ 80percent RH color: As shown Material: PCB Package Contents: 1 * WIFI Switch Module 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.