✨Thank you for viewing!✨ ★ Brand new, unused ★ Instant purchase OK ★ Shipped with simple packaging 【Smart Wireless Doorbell】 Freely switch between 60 carefully selected melodies. Features a new incoming call preview mode. Press and hold the button to play a 2-second intro of each song, making it easy to find your favorite "welcome song." With 5-level volume adjustment and mute mode, it won't disturb baby's naps or nighttime rest. 【Infinite Guardian・Precise Response】 With a receiving distance of 1000 feet (approx. 300m) and a maximum volume of 110 decibels, it clearly transmits sound even in apartments, offices, and classrooms. It serves as a guardian butler in your home and supports teachers in maintaining classroom silence and concentration. 【Installation completed in 3 seconds】 No wiring required! The receiver is plug-and-play and can be easily attached to the wall with the included adhesive sticker. The power-off memory function automatically saves settings, so your favorite ringtone and preferred volume level are remembered even during unexpected power outages. It's like a thoughtful electronic assistant. No pairing required—can also connect with other doorbells sold by our store. 【High-Quality Protection】 Stable operation from -4°F to 140°F (approx. -20°C to 60°C), resistant to heavy rain, snow, and direct sunlight. The replaceable CR2032 button battery has a 3-year long life (when measured 5 times a day), and the IP55 waterproof button withstands wind and rain. Safety is guaranteed with EU CE/US FCC dual certification. ♪ We also have many other wonderful products on sale ♪