Features: *Supports WiFi network.Supports numerous WiFi smart switches on one smart phone. *Supports status tracking: device status timely provided to the for Tuya / Smart life. *Supports remotely turn on or off connected appliances, for example light, electric kettle, electric rice cooker, electric curtain, access control, etc. *Supports max 8 enabled scheduled/countdown/loop timers for each device. *Voice Control: Compatible with "Amazon" Alexa, for Google Home. Specifications: Operating voltage: 5V Micro USB / 7-32V DC Two input interfaces USB port power supply more convenient Output: 10A Max, 4gang Relay Load: AC 250V 4 Channel Total Load: 10A/2200W Single Load: 10A/2200W Board consumption: 1W Standby current: 80mA Supports to control different voltage ranges Relay lifespan: 1000000 times Electrical insulation resistance: 100M Electric shock voltage: 1000V Relay maximum pull time: 15ms Relay maximum release time: 5ms Working mode: Inching /self-locking, Interlock Wireless Standard: 2.4GHz, 802.11 b/g/n Mobile App: for Tuya / Smart life on Android/IOS Applicable occasions: smart home.Wifi control Control distance: infinity Controlled lines: 4 Operating temperature: -40 degrees to +70 degrees Operating Humidity 40%-80% RH Item Size: 73 * 73 * 18 mm / 2.9 * 2.9 * 0.7in Package Information: Package Size: Approx.10.5*8.5*4cm / 4.1*3.3*1.6in Packing List: 1 * Wireless Switch Module