1. AC doorbell, receiver (indoor unit) use household power supply, plug directly into the socket, no battery, environmentally friendly! The transmitter (outdoor unit) uses a battery for about one year.
2, super reception for home, office, hotel, building, dormitory, factory, construction site, etc.
3, use the same doorbell in one range, and will not interfere with each other! The wireless high-frequency transmission technology and the same-frequency different code effectively avoid the troubles caused by mutual interference and false alarms between neighbors.
Warm reminder: This product is free from obstacles and straight-line remote control distance is not less than 300 meters. It can meet the needs of different family environments. The general family has no problem with security doors and several walls.
Feature 1: Anti-interference will not appear stringing.
Feature 2: Receiver Smart Flash
Feature 3: Receive signals over long distances.
Feature 4: Adjustable volume and music installation is easy to use 3 volume adjustable 38 music optional