Timbre inalámbrico KERUI M518 con autoalimentación, 52 melodías, sistema de seguridad inteligente para el hogar, timbre de bienvenida, mini botón con luz LED.

KERUI M518 Self Generation Wireless Doorbell - No Battery Required 7 Top Reasons for You to Choose US ! 1. KERUI specialized in producing high-quality wireless doorbells, we sell wireless doorbells have passed CE and RoHS certification. 2. We are an honest brand and we have 1 year warranty or replacement commitment. 3. Button is the latest self-powered technology that not need to install battery. 4. Button is Waterproof IP44. Don't worry about extending use in heavy rain. 5. Remote control range up to 150m in open space, the wireless signal will be affected by obstacles. Meet the needs of most residential and high-rise buildings. 6. Easy to install with the double side adhesive tape or the screws. 7. One receiver can match up to 20 buttons . Main Features: 1. 52 Available Tones 2. 5 Adjustable Volume Levels (including mute) 3. Memory Function (when the doorbell receiver power on, the tone stays the same with the one being set last time) 4. Dazzling and Colorful Indicator Light No Battery Required No Battery Required for Push Button and Receiver : When the button is pressed, it converts kinetic energy into an electrical signal to ring your wireless doorbells. So no more worrying your push button runs out of batteries and no more hassle in buying awkward weird batteries to run your push button. Ordinary doorbell was average changed a battery once a month , Every year need 12 batteries, one battery costs 1 dollar, You can save lots of money and batteries every year. Colorful Light Flashing with Tones Doorbell Receiver is flashing along with playing tones, then it is easy to remind that there is someone coming. The light is about 0.3W, only 1-3 kWh a year 52 Available Tones 52 tones for your options, you can select regularly, and don't feel bored. Avoid the same ring with the neighbors. 5 Adjustable Volume Level After a busy working day and want a relax sleeping time ,you can adjust it to mute. And the maximum volume can up to 100dB. Quiet Mode The mute setting can avoid disturbing the baby's sleep. There is a LED flashing light reminder when guests ring the doorbell. Long Distance Transmission Long operating range can be up to 330ft(150m) in open space, great for large house including villas, apartment, offices, shops, warehouses, etc. Easy Installation Just plug the receiver into power socket and attach the transmitter on door, you don’t even necessarily have to make holes or damage anything. Emergency Call Function Elderly care / patient care / emergency call for help. Home care wireless pager, 24-hour care.