Self-powered wireless outdoor doorbell, Ding Dong welcome doorbell, black --

1. Simple and easy to use: Wireless doorbell installation is convenient, no wiring or drilling required, won't damage your doorbell. 2. Wide range of ringtones: Doorbell with horn for enhanced sound quality, doorbell coverage of 200 square meters. 3. No need for power supply: Standalone electric doorbell without batteries, self-powered design, explore the revolutionary reform of the indoor era. 4. Don't worry about power outages: Excellent wireless doorbell, no more worrying about the doorbell not ringing when friends arrive. 5. Operating principle: The integrated doorbell generates a pattern; when you press the buttons with your fingers, it is automatically converted into electricity, instant wireless signal, the indoor receiver rings automatically. Specification Item Type: Self-Powered Wireless Doorbell Material: ABS Color: Black Weight: 111g/3.9oz (approx.) Package Contents 1 x Doorbell 1 x Receiver 1 x Back Adhesive 1 x User Manual