Sonoff 4CH Pro R3 10A /Gang 4 Channel Wifi Smart Switch 433 MHZ RF Remote Wifi Lights Switch Supports 4 Devices Works with Alexa Turn on/off 4 home appliances remotely Device status's synchronously display Scheduled/Countdown timers Share control Supports setting power on status Works with Echo, Echo Dot, Tap Works with Google Home, Google Nest Works with IFTTT Specification Power Supply: 90V~250V AC(50/60Hz) Max. Current: 10A/gang Max. Power2200W/gang, 2200W/Total Wireless Standard: 802.11 b/g/n Security Mechanism: WPA-PSK/WPA2-PSK Enclosure Material: Fire-retardant ABS V0 Gang: 4 Dimensions: 145*90*40 (mm) Operating Temperature(recommended): 0C-40C(32F-104F) Operating Humidity: 5%-90%RH, Non-condensing Certification: CE/FCC/RoHS (Download the Certificate and Reports) Specifications: Support countdown timing and schedule timing Support one-key sharing device to other user Support tracking device status Timely remote control through APP Independently turn on/off 4 home appliances 4 Channel din rail mounting WiFi switch Package Included: 1 x Sonoff 4CH R3