Campanello senza fili KERUI per la sicurezza domestica, con suono di benvenuto, compatibile con rilevatori di movimento PIR, sensori per porte, allarme sonoro e pulsante di chiamata.

KERUI M525 60 Chime 500ft Wireless Door Sensor Doorbell Features: 1. Keep your children safe - Alert when you little one opens the door.. 2. Alerts when burglar opens door and helps deter break-ins. 3. 60 chime with Mute to Loud dB. Introduction The wireless doorbell adopt advance wireless receiving and dispatching technology, powerful microcomputer control system, high capacity and superior voice processing technology, up to 60 songs with reliable and stable performance. Monitor Every Areas You Care with Wireless Door Chime 500 feet far enough to cover every door and window in your house. Each wireless doorbell receiver can pair up to 20 magnetic door alarm sensors and each sensor can add unlimited receivers. 24/7 Lifeguard for Your Family This business door entry chime alerts when burglar opens door and helps deter break-ins(wireless door alarms activates when magnetic sensor separates Easy to install Just plug the receiver into power socket and attach the door sensor on door , just keep the sensor and magnetic strip within 0.4 inch. You don't even necessarily have to make holes or damage anything. 60 songs optional 60 ringtones for your option,you can select regularly,and don't feel bored.Avoid the same ring with the neighbors. Strong Signal ,150m Long Distance Transmission Long operating range can be up to 500ft(150m) in open space, great for large house including villas, apartment, offices, shops, warehouses, etc. Compatible with alam sensors & detectors One transmitter can pair with several(max 30) receivers, and one receiver can pair with several(max 30) transmitters. Customize your doorbell according to your need. Product Detail: Receiver 1. Working Voltage: AC 100-240V 2. Working Current: < 100 mA 3. Wireless Frequency: 433 MHz 4. Working Temperature: -10-50 degree centigrade 5. Wireless Distance: 150 meters (Open area) Kindly Remind: The F15 button, HW7 PIR sensor and D025 door sensor are with battery.