KERUI M525 Sonnette de porte intelligente sans fil 433 MHz pour la sécurité de la maison, étanche, bouton tactile, longue distance de 150 m

KERUI M525 Wireless Doorbell 433Mhz Home Security Waterproof Touch Button 150M Long Distance Smart Doorbell 32 Songs Adjustable We have 2 type doorbell button for choice: F51 button and F51 button 1. F51 Doorbell Button: Press button and Non-waterproof,battery included 2.F52 Doorbell Button: Touch button and Waterproof,battery included 1. F51 Waterproof touch doorbell button for choice F52 doorbell button waterproof level is up to IP66,you can put it on the outdoor wall .And low power consumption, it can use about one year if press average 10 times a day. 2. 32 songs optional 32 ringtones for your option,you can select regularly,and dont feel bored.Avoid the same ring with the neighbors. 3.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. 4.4 levels adjustable volume: You can turn down the doorbell when you need quiet at home to prevent noise, and turn it up when it is noisy to prevent inaudibility. 5.Support a variety of doorbell packages You can turn down the doorbell when you need quiet at home to prevent noise, and turn it up when it is noisy to prevent inaudibility. 6.Doorbell, alarm, welcome alarm all in one: Compatible with alam sensors detectors,this doorbell support learn 30 accessories. 7.Easy to install: Just plug the receiver into power socket and attach the transmitter on door,you dont even necessarily have to make holes or damage anything. 8.Product detail: The wireless doorbell adopt advance wireless receiving and dispatching technology, powerful microcomputer control system, high capacity and superior voice processing technology, up to 32 songs with reliable and stable performance. 9.Parameter: 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) Brand Story :