Long-distance wireless communication rangeThis wireless doorbell has a connection distance of up to 300 meters/1000 feet, ensuring that you will not miss any visitor and will not interfere with other devices in your home. Waterproof & Waterproof DurableIP44 waterproof doorbell can withstand extreme weather conditions (-25 to 55, 5%RH to 95%RH). The transmitter is equipped with a 12V/23A battery with a maximum service life of 2 years. 38 Polyphonic RingtonesThis wireless doorbell receiver has 38 polyphonic music. 'Good. Tuning quality and 4 adjustable volume levels (from 25 dB to 85 dB). When the volume is low, the colored flashing indicator will alert the hearing-impaired. LED IndicatorWhen the transmitter is pressed and a signal is received, the colored LED indicator on the plug receiver will flash. . The flashing colors can help people with hearing loss and can also be used as an emergency alarm for elderly patients. Easy InstallationJust plug the wireless doorbell receiver into the wall socket. Power, and then fix the transmitter to the exterior wall with double-sided tape or screws. The wireless doorbell has a memory function, and there is no need to reset the signal and volume level after power failure. The wireless doorbell connection wire and push button make it easy to replace the general home doorbell with a doorbell, which is more suitable for your personal style. The doorbell adopts a wireless design, and there is no need to knock on the wall. Install the doorbell. Double-sided tape is included in the package, just stick it on the wall. Get ready for Easter! Ding Dong.