Zigbee switch use Ewelink APP, it is using CR2032 battery (include battery in
shipment).
Tips for purchase: This product is Zigbee version, Users must have/already bought a ewelink zigbee hub to operate. If without a zigbee hub, then such model will not work.
Zigbee Smart Push Button Wireless Switch Include Battery Remote Control Automation Scenario Switch work with eWelink APP
Power supply: Battery CR2032 3V DC(included)
Communication: Zigbee 3.0 *(ewelink zigbee hub is needed)