Wireless Doorbell 4000ft Ultra Long Range, IP67 Waterproof Door Bell Chime for Home Business Classroom Warehouse, 38 Melodies & Mute Mode (Black-1button+1receiver)

RELIABLE 4000FT ULTRA LONG RANGE: Engineered with advanced signal penetration technology, this wireless doorbell covers a long distance of 1200 meters (4000 feet) in open areas...

• RELIABLE 4000FT ULTRA LONG RANGE: Engineered with advanced signal penetration technology, this wireless doorbell covers a long distance of 1200 meters (4000 feet) in open areas...
• IP67 WATERPROOF & ALL-WEATHER DURABLE: Designed with a robust IP67 rating, the transmitter thrives in heavy rain, snow, and extreme temperatures ranging from -10°F to 140°F. Its high-grade, weather-resistant construction ensures reliable performance year-round in any outdoor environment.
• CUSTOMIZABLE CHIMES & VISUAL ALERTS: Features 38 high-fidelity melodies with 4 adjustable volume levels to suit your preference. Includes a silent "Mute Mode" with a flashing LED indicator, providing a clear visual notification that is ideal for nurseries, quiet offices, and the hearing impaired.
• VERSATILE CLASSROOM & BUSINESS PAGER: Beyond a doorbell, it functions as a highly effective teacher’s pager or an emergency call button for seniors. The system is fully expandable, allowing you to pair up to 20 additional units to provide comprehensive coverage and tailored security across your entire property.
• EFFORTLESS SETUP & SMART MEMORY: No wiring required—simply plug the receiver into an outlet and mount the button using the included industrial-grade adhesive or screws. The smart memory function preserves your selected ringtone and volume level during power outages for ultimate daily convenience.