Smart Alarm System - Wireless Doorbell Alarm Kit

The 260ft Wireless Doorbell Detector is a versatile home security and notification system. This expandable kit includes wireless door/window sensors and a plug-in alarm receiver. The system can be extended to support up to 20 sensors and 20 receivers for comprehensive property coverage. The receiver features 39 selectable ringtones and 5 adjustable volume levels ranging from 0 to 110 dB, with memory function to retain settings after power loss. Each wireless sensor emits a 110dB alarm when triggered by the opening of a door or window. The system operates on a wireless frequency with a range of up to 80 meters (260 feet) between sensor and receiver. Installation is simple using the included double-sided adhesive tape for sensors and standard power outlet for the receiver. The device is suitable for use in homes, garages, shops, schools, and other locations requiring entry notification or basic security. Note: Installation on metal doors is not recommended as it may interfere with signal transmission, and sensors should be spaced at least 0.4 inches apart.