AVANTEK Long Range Waterproof Wireless Doorbell

From The Manufacturer

With unparalleled 1312 ft wireless range and strong signal penetration, the doorbell will never fail to alert you when someone shows up at the door. Be it a friend or a delivery, you can always rest assured that you’ll never miss them again. Feel free to use it for the home, factories, hospitals, offices, apartment blocks, villas and other large areas, knowing that the long operating distance will always get you covered. Expand your existing AVANTEK D-3B doorbell system with up to 2 transmitters and multiple receivers for your specific usage scenario in seconds thanks to the simple pairing method. The transmitter uses a 230 mAh CR2032 lithium battery which has an ultra long three-year lifespan, freeing you from the hassle of frequent battery purchases. Functional between -4 °F to 140 °F, its tough construction allows the doorbell to operate in even the harshest weather conditions.