Campanello esterno senza fili, senza batterie, impermeabile, campanello di benvenuto intelligente per la casa (1 pulsante, 1 ricevitore)

1. Battery-free. Our doorbell transmitter converts kinetic energy into electrical energy, making it energy-efficient and environmentally friendly, allowing us to enjoy a green and eco-friendly lifestyle. 2. High performance: This waterproof mini doorbell button is made of high-quality ABS material, IP68 dustproof and waterproof, and can withstand operating temperatures between -15°C and +60°C, enduring various harsh weather conditions. It can also be used outdoors in the rain. 3. High quality: Our doorbell transmitter has undergone professional testing. The transmitter's lifespan can reach 500,000 cycles, far exceeding the industry average. 4. Remote control distance is approximately 100 meters (open area), and 30-50 meters indoors without barriers (this data is the experimental open area barrier-free test distance. The actual distance will be affected by the usage environment. The more obstacles, the shorter the distance). 5. Easy installation: Simply use the included tape to install the white wireless doorbell button in any location you like, and then plug the wireless doorbell into a power outlet to complete the setup. They will not interfere with other devices in your or your neighbors' homes. 6. If you have many rooms, you can buy a receiver for each room so you can hear the doorbell in every room and know when a guest has arrived. 7. This self-powered wireless waterproof doorbell is suitable for homes, warehouses, offices, garages, shops, apartments, hotels, villas, gardens, hospitals, schools, the elderly, and children.