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Door Alarms When Opened Our door alarm sensor triggers immediately upon unauthorized door or window openings. When the gap between the alarm and magnetic sensor exceeds 0.39 inches, a 120dB loud alarm and bright LED indicator activate to deter intruders and alert you instantly, enhancing home security and safety.Door Alarms for Kids Safety Protect toddlers, children, and seniors with dementia or Alzheimers from wandering unsupervised. These window alarms notify caregivers immediately to prevent accidents, helping you safeguard your loved ones with peace of mind.Slim and Compact Design These ultrathin door and window alarms feature two adjustable settings OffOn. Each alarm includes 3xLR44 batteries for immediate use. If the pool alarm does not work properly, check the power mode and battery condition to restore normal function.Easy Installation Install in seconds using the included strong doublesided adhesive tapeno wiring, drilling, or tools required. For optimal performance, clean the mounting surface and align the sensor within 0.39 inches of the alarm unit.Multiple Scenarios Usage Ideal for home, hotel, apartment, room, garage, shed, caravan, RV, closet, cabinet, pool area, and sliding doors or windows. Equipped with a lowbattery reminder for easy monitoring. Note May not perform optimally on uneven surfaces. MORE DETAILS asin B0GSWCT4CL batterydescription Alkaline bestsellersrank 81 in Home Security Systems brand Noopel builtinmedia 4 Pack Door Alarms When Opened customerreviews 4.3 4.3 out of 5 stars 5,956 4.3 out of 5 stars manufacturer NOOPEL manufacturerwarrantydescription 1 Year Manufacturer modelnumber MSA820 Door Window Alarm numberofbatteries 3 LR44 batteries required. included
