Inching Timer Function - Set inching time for your boiler on App, when time is up, the boiler can be off automatically , for example, if you set 30 minutes, so after 30 minutes working time since you touch on the glass panel or mobile App, the boiler will be off by itself. Voice Control - Google Assistant- Amazon Echo Alexa Remote Control Remote control your water heater / boiler by App, Turn it on in advance, so that you can enjoy a warm shower when you arrive at home. Set Sechdule Timer for the Boiler - You can set schedule on App when to turn on, or turn off the water heater.- Timer and Schedule Function, you can turn on or turn off the water heater automatically. App Feedback for ON or OFF When you touch on App, it will gives you a feedback that it's on or off. So you can check your boiler status anywhere anytime. Switch Size - Dimensions: 86mm*86mm*35mm- 2 color available , white and black Installation - Please note before you have to install the switch you have to cut the power first, after finishing the connection, please turn on the power. 1. Firstly please cut the power of the boiler. 2. Connect the switch for how to install it, please refer to below picture. Specification Input Voltage: 100-250VAC, 50/60HzOutput Voltage: 100-250VAC, 50/60HzMax Load: 20A, 4400WApp Name: Smart Life, Tuya AppVoice Control: Google Assistant, Amazon AlexaWireless Protocol: 2.4GHz Wi-FiSwitch Dimensions: 86mm*86mm*35mmPlastic Material: Fireproof ABSCertification: CE, RED, EMC, RoHSProduced by ISO9001:2015 factory: YesPatented Product: Yes We have all the accessories you need in the box, you don't need to pay extra cost. What's in the box? 1 * Smart Boiler Switch1 * User Guide