Overview: This wireless switch is a low-cost, affordable device with fool type wifi control module, no programming, only need to download an APP and link WIFI then can control the own cloud. As long as the module links WIFI, the  connected appliance of different types and brands can be controlled via phone APP EWeLink from anywhere anytime in the world. Meanwhile, by setting timing schedules for your appliances and sharing control your smart home together with your family, you can maintain an carefree life.  Features: *Supports WiFi network. Supports numerous WiFi smart switches on one smart phone. *Supports status tracking: device status timely provided to the EWeLink.  *Supports remotely turn on or off connected appliances, for example light, electric kettle, electric rice cooker, electric curtain, etc. *Supports max 8 enabled scheduled/countdown/loop timers for each device. *Voice Control: Compatible perfectly with "Amazon" Alexa, for Google Home/Nest, IFTTT. Specifications: Working voltage: 5V DC  Indicator: With a signal indicator, relay pull the light Two input interfaces: Wiring input DC5V & USB DC5V Supports to control different voltage ranges USB port power supply more convenient Board consumption: <1W Standby current: 80mA Input current: ≤10A; Wattage: ≤2200W 4 Channel Total Load: 10A/2200W Single Load: 10A/2200W Relay lifespan: ≥1000000 times Electrical insulation resistance: 100M Electric shock 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/n Mobile App: EWeLink on Android/IOS Applicable occasions: smart home. Wifi control Control distance: infinity Controlled lines: 4 Enclosure Material: Fire-retardant ABS  Operating temperature: -40 degrees to +70 degrees Operating Humidity 40% ~ 80% RH Item Size: 74*73*24 (mm) Package Information: Package Size: Approx. 10.5*8.5*4cm / 4.1*3.3*1.6in Package Weight: Approx. 75g / 2.6oz  Packing List: 1 * 4CH WIFI Switch Module