SMATRUL WHK-S2 WiFi Push Button Light Switch Wireless RF 433Mhz Wall Relay Timer for Amazon Alexa Go

SMATRUL WHK-S2 WiFi Push Button Light Switch Wireless RF 433Mhz Wall Relay Timer for Amazon Alexa Google Home - Black 433MHZ RF function + WIFI function 2 in 1, smarter and more user-friendly100m long-distance signal, suitable for open areas, the scope of use in non-open areas will be reduced3 kinds of restart state, don't worry about the light still on when you go outVoice control, works perfectly with Amazon Alexa, Google Home, etcTurn off the lights after leaving, save energyTiming function, turn on the lights regularlyCountdown function, set the light off time freelyFix with double-sided tape, feel free to pasteFluorescence strip design, you can find the switch at nightSpecifications:Remote control remote distance: up to 100m (theoretical distance)Controller working voltage: AC 90V -250V 110V 220V 60HZ / 50HZController working frequency: 433.92MHZ + 2.4GHz WiFiController WIFI standard: IEEE 802.11 b/g/nController operating temperature: -10? to + 70?Controller size: 83 * 42.3 * 25mmSupport system: Android / IOSSupport application: Tuya or Smart LifeVoice Control: Google Home, Amazon