SECRUI Wireless Door Open Sensor Alarm Chime

🔔 Monitor Every Areas You Care with Wireless Magnetic Door and Window Alarm -- 400 feet long range far enough to cover every door and window in your house. The wireless and portable design allows you to install the wireless entry alert doorbell anywhere in your home, work, office, retail store or business. Each magnetic door / window sensor receiver can pair up to 20 door alarm sensors and each door sensor can add unlimited receivers. Different door sensors can be set to different chimes., 🔔 24/7 Lifeguard for Your Family -- The door alarm sensor will detect the door/window, and will be triggered to send out a signal when the door/window opening. This home security door alarm sensor chime when burglar opens door and helps deter break-ins. We use multi-color led reminders to help people with poor hearing find guests or thieves coming. Use our wireless door alarm sensor, more safe and reliable., 🔔 52 MP3 Door Chime & Mute -- This wireless door entry alert for shop has 5 levels of adjustable volume from 0-110 dB. Offer 52 elegant mp3 music from the traditional"Ding Dong" to various well know chimes. Memory function: Keep the previous setted tune after re-plugging it., 🔔 Easy Installation the Wireless Window and door entry alarm system -- All hardware is in package. Just plug the wireless magnetic door chime receiver into any standard outlet and tear the double-sided adhesive tape which on the back of door sensor alarm( or screw mounted) and stick them to the door or window is fine. Please take the insulating paper away before using the wireless door and window open sensor alarm chime., 🔔 Mini Contact magnetic Door / Window Sensor Alarm -- Door alarm sensor chime (size: 3.0 x 1.0 x 0.60 inch), magnetic strip (size: 1.7 x 0.6 x 0.4 inch). They are small size and can be installed or placed at any indoor position to provide you with a door entry chime/alert system.