Feature: 1. MINI DOORBELL RECEIVER: This receiver is equipped with strong power speakers, 38 music options, adjustable volume, and mute mode, allowing you to customize the doorbell according to your needs. 2. WIRELESS CONTROL: The 100m ultra long wireless range ensures that you never missing visitors, even if you have people outside a few rooms or on another floor, garden, kitchen, or basement. 3. 360° ROTATION: The transmitter adopts an infrared probe, with a 360 degree universal rotation and a 120 degree sensing area, with a sensing distance of 3 to 7 meters. It is IP65 waterproof, with a deep waterproof groove and a strong waterproof cover. 4. WATERPROOF TRANSMITTER: Designed with fully sealed waterproof good protection, with a waterproof level of up to IP65, easy to withstand various adverse weather conditions, and can be used outdoors. 5. EASY INSTALLATION: Simply plug the mini receiver into the socket and secure the transmitter to the door or wall. The installation is very simple and can be completed in less than a minute. Use our easy to use wireless doorbell to bid farewell to the hassle of wiring and installation. 6. APPLICABLE SCENARIOS: The doorbell is suitable for villas, elderly rooms, children's rooms, warehouses, vehicle access, security areas, outdoor areas, and animal access areas. Specification: Item Type: Driveway Alarm Material: ABS Transmitter Battery: AAA battery x 3 (shipped without battery) Working Range: Approx. 100m / 328.1ft Infrared Range: Approx. 7m / 23ft Protection Level: IP65. Package List: 1 x Emitter 1 x Receiver 1 x Universal Support 1 x Universal Head 1 x Manual 2 x Screw 2 x Expansion Tube