TP-Link Tapo S200D Smart 868 MHz Remote Dimmer Switch, CR2032 batterySmart Actions - Control and set multiple smart lights, electronics, and other Tapo smart devices.Local Instant Control - Get instant, app-free control over your smart devices with the smart remote dimmer switch.Control From Multiple Locations - Control your smart lights from multiple locations with more than one dimmer switch. Customized Actions - Single tap, double tap, and rotating options enable you to trigger multiple smart actions.Flexible Mounting - Place the smart remote dimmer switch wherever you want, and your lighting control are always within reach.Long Battery Life - The battery will last more than one year.