Home mode Single the wireless button to turn on all your lights,air conditioners, fans and otherelectronic devices you want when you arrive home.Away-from-home mode Set the double-tap knob button to switch off all lights, air conditioning, fans and other electronic devices. Tuya Smart Key Switch Mobile Setting Wireless Remote Key Controller Multi-scene Linkage Smart Switch Battery Powered Requires a button battery for power supply. Not included in delivery Color: As shown Material: ABS Package Contents: 1xScene switch 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.