The KingArt 20A switch is a WiFi-only glass touch switch that is compatible with the Sonoff / eWeLink app. It has a maximum performance of 20A, making it suitable for high load electric devices such as electric boilers and electric heating. This switch features an elegant black glass touch panel and can be remotely controlled using a smartphone app. It also supports voice control with Amazon Alexa and Google Assistant. With its timer function, you can schedule the switch to turn on or off at specific times. Additionally, it has a sync status feature, share control capability, and is compatible with various smart home platforms. Please note that this smart switch requires both live and neutral wires for installation.