Wireless Doorbell, Rechargeable Battery Doorbells, Hands-Free Full Duplex Intercom Doorbell Operates Over 1000ft Range, 8 Adjustable Volume & 4 Chimes Wireless, Waterproof&LED Flashlight

【Full Duplex Doorbells】This doorbell for home/classroom/office has been paired before delivery. Wireless doorbell is a full duplex intercom with real-time two-way and hands-free communication. You only need to press the answer button once to start a hands-free conversation with the visitor.
【Long Range Doorbell】Our wireless doorbell is 1000 feet long and uses high-frequency electrical technology and FM signal protocol, with strong anti-interference protection and multi-signal pairing function. The full duplex doorbell will not interfere with other devices in your home or neighbors.
【High Quality Sound】This doorbell has 8 adjustable volumes which can change the ringtone volume and voice volume. The volume sound is loud enough to make sure that you can hear the doorbell rings in any place of your house/office/classroom and the stereo speaker produces rich and crisp sound to support real-time two way communication.
【Long Battery Life】This doorbell has a built-in rechargeable Lithium battery to supply electricity, and when the battery is low, the doorbell receiver will sound a voice prompt. We recommend that you fully charge the doorbell before using it for the first time. The doorbell receiver battery can be used for 4 to 5 days on a full charge, and the transmitter battery can be used for 4 months on a full charge.
【100% Satisfaction】The intercom doorbell is made of high-quality ABS material and can withstand various harsh weather conditions at operating temperatures between -4 ° F and 140 ° F. This wireless doorbell also features IP55 waterproof and LED lights. If our doorbells malfunction, please contact us as soon as possible to obtain a solution.