Door Chime, Wireless Door Alarms When Door Opened, 39 Chimes, 5-Volume Level, 1 Receiver + 4 Sensors, 260 FT Range Door Alarms for Kids, Toddler & Dementia Safety, White

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DOORBELL DETECTION KIT - This wireless alarm detector emits a volume of 110dB when the door or window is suddenly open. It is a good helper for children, home, garage, school and safety.
39 Chimes & 5 Volume Levels - 39 built-in melodies with 5 adjustable volume levels (up to 110dB). Switch to silent mode with LED flash – works well for nurseries, offices, or hearing‑impaired users. Functions as a door open chime or door alerts when opened system.
260FT Range & Expandable - With a wide 260FT range between the receiver and sensor, this system offers extended coverage for home and business security. It’s expandable, allowing you to add multiple sensors to cover different entry points or rooms, each triggering a unique door chime for enhanced security. Perfect for commercial spaces and large homes.
Easy to Setup - The door alarm sensor is easy to install with 3M double-sided tape or screws. Out of the box, it’s pre-paired with the receiver, making setup quick and simple. Perfect for home alarm security and business entry alarm systems, it’s a plug-and-play solution with no complex wiring.
After-Sales Service - If you have any problems about this door bell. Please contact with us the first time!