XY-805 Adjustable Volume Wireless Waterproof Doorbell Elderly Call Device 1. Wireless & Easy Installation: No wiring required. Quick and hassle-free setup for homes, offices, apartments, shops, and more. 2. 100m Long Wireless Range: Stable signal transmission provides reliable alerts over long distances. 3. IP Waterproof Design: Weather-resistant push button ensures dependable performance in rain and outdoor conditions. 4. 30mm enlarged button for comfortable pressing. 5. Adjustable Volume Levels: Multiple volume settings for quiet homes, busy offices, or noisy environments. 110 dB Extra-Loud Sound with 4 adjustable volume levels at the touch of a button. 6. LED Flash Alert: Bright LED indicator provides visual notifications, ideal for seniors and hearing-impaired users. 7. Doorbell & Emergency Call Button: Functions as both a wireless doorbell and a caregiver call button for seniors, patients, or children. 8. Low Power Consumption: Energy-efficient design for long-lasting and reliable operation. 9. Built-in 7-Color LED Light provides clear visual alerts, ideal for noisy environments or hearing-impaired users. 10. Transmitter: Powered by a CR2032 coin cell battery.