Wireless scene switch: By gradually upgrading the switch devices in your home, you can gradually create a smarter and more convenient home environment Create smart scenes in the Tuya Smart APP: Turn your daily work into a seamless experience Create multiple smart scene links: With just one click, you can control multiple devices at the same time and enjoy a truly connected life experience Compact size, wide application: put it anywhere at , or just with adhesive, no complicated installation required<br><br>Button:a button Working voltage:3V Wireless protocol:Zigbee 3.0 Indicator light:red indicator light Standby current:≤10uA Battery Type:CR2032 CR2032 Standby time:≥12 months Working temperature:-10℃-55℃ Working humidity:0%-99%RH Product size:Ф50x13mm (The color and style of the sticker are random, no specification is accepted, The product appearance and printed words depending on the batch, but this does not affect use) Color: White Material: PC flame retardant<br><br>Package Contents: 2 * Tuya Smart Knob Switch<br><br>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.