Two connection methods: the controller is only connected to the N line and the L line, not to the switch. This smart DIY switch can be used with your old 2 Gang control switches. In particular, you can still manually control the old switch after installation. Voice Control: Fully compatible with and Google Home/Tmall Genie. Timing function: set the time to turn on the light and set the cooking time. 16A current is suitable for most devices in the home. The mini body is smaller and more convenient, easy to install, put it directly in the switch bottom box. So you 't have to climb stairs to install the controller. Type: (A)Smart Switch Input voltage: 100-240V 50/60Hz Maximum load current: 16A WiFi standard: 2.4GHz 802.11 b/g Application name: Tuya Smart Size: 42 x 42 x 20mm Material: PC colour: white Package Contents: 1 x Switch Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.