Kerui Wireless Doorbell Home One With One Two Without Wires Electronic Remote Doorbell Pager Battery Corey Wireless Doorbell Home One Belt One Two Wireless Electronic Remote Control Doorbell Product name: Wireless self-powered doorbell color: White material: plastic Weight: 0.5kg Features: 1. Waterproof touch doorbell button 2. Compatible with alam sensors and detectors 3. 32 songs to choose 4. Strong signal, 150m long-distance transmission 5.4 level adjustable volume 6. Support multiple doorbell packages 7. Doorbell, alarm, and welcome alarm three in one 8. Easy to install Product Details: The wireless doorbell adopts advanced wireless transceiver technology, powerful microcomputer control system, large capacity and superior voice processing technology, up to 32 songs, reliable and stable performance. parameter: 1. Working voltage: AC 100-240V 2. Working current: