TP-LINK Tapo S200B Smart ButtonFEATURES :- Smart Actions Control and set multiple lights, electronics, and other Tapo smart devices with the button.- Customized Actions Single tap, double tap, and rotating options enable you to trigger multiple actions, from just one button.- OneClick Alarm Family members can use the device to get help in times of need.- Control From Multiple Locations Control electrical fixtures from multiple locations with Tapo smart buttons.- Long Battery Life The battery will last more than one year.SPECIFICATIONS :- Standards and Protocols : 868Mhz / 922MHz- System Requirements : iOS 10+, Android 5.0+- Operating Temperature : 0~40C- Dimensions( H X W X D ) : 43.5 x 16.9 mm- Power Requirements :CR2032 Battery