Purchase Tips For the device to connect to the mobile app, it must be paired with a supported gateway, which needs to be purchased separately and can be linked with other compatible smart devices to realize automation scenarios. Function APP Remote Control Require Tuya Hub. You can check the working state of the device in Tuya APP anywhere and anytime. RF433mhz Control The device can be controlled by the RF433mhz Remote Controller. Mobile Phone Control Require Tuya Hub ,when you go outside or at home, your smart phone could control the device by 2.4Ghz WIFI or 2G/3G/4G Mobile Network. Voice Control Require Tuya Hub, you could voice control the device by Alexa/Google Assistant. Smart Linkage Cooperate with other products to achieve intelligent linkage. For example, with door magnetic sensing, to realize the light on immediately after opening the door Group Control Unified management of individual devices using gateways Timing function Lying in bed without turning off the lights fell asleep, it does not matter, the wall switch timing function to the point of turning off the lights, from the lights off do not worry about. Two Working Modes Self-locking, Inching What can I use it for? *Connect a light, remotely control the switch of the light.Connect a light, remotely control the switch of the light, and can also switch on and off regularly 19:00 On 21:00 Off *Open your curtains regularly 7:00 *Change the water for the fish tank regularly *Use mobile phone or voice control Garage door switch *Control your heater remotely *And your coffee machine *Connect a water pump, remote control or timer switch More functions waiting for you to discover. DIY Checklist before using the device You need to have a gateway. Try to be close to the gateway when pairing. Timing Function you can the time to turn on lights and turn on the fans in the office Remote control of garage door opening and closing Group Control Set all of your smart switches in a group by Smart Life app. Then one-click to turn/off all of your appliances or lightings by smartphone. Family Sharing Share the control with family member.Enjoy the convenience and happiness together Hands-Free Voice Control Compatible with Alexa & Google Home,the smart switch allows you to control lights on/off with your voice Parameters: lnput voltage:USB 5V DC/AC 7V~32V AC 85-250V Max.Current:2200W/10A wireless Standard:Zigbee Working temperature: -20~70 Size: 69*41*20mm 433MHz Remote Control: Operating voltage: DC12V (27A/12V Without battery) Transmitting frequency: 433MHz Encoding Type: Learning code Transmission distance : 10-100M (Open field) Free screwdriver