Wireless Cordless Calling Remote Door Bell for Home, Shop, Office, Warehouse and Factories (Multicolor)

1 x Doorbell push button transmitter + 1 x wireless doorbell + 1 battery pack for trigger push button included in the pack 1 x Doorbell push button transmitter + 1 x wireless doorbell + 1 battery pack for trigger push button included in the pack Flash light turns on when guest presses the remote button With double side stickers at the back side of the remote button. very easy to install The ultra-distance remote control (30 meters long) meets the need of various buildings