Door/Window Sensor, 4-Pack, Only Compatible with ADT Blu Systems | DIY smart home security, Tamper alerts, Convenience mode for drawers and cabinets, ADT+ App control

Add more coverage to your ADT Blu system with the Door/Window Sensor 4-Pack. These battery-operated wireless door and window alarm sensors alert you instantly through the ADT+ app whenever a door or window is opened, giving you real-time visibility into every entry point across your home. Each sensor features built-in tamper detection that notifies you if the sensor has been moved or disturbed, so you always know your security is intact. Use convenience mode on any sensor to monitor medicine cabinets, liquor cabinets, gun safes, jewelry drawers, or other valuables with app notifications that do not trigger audible alarms. Install in seconds with the included screws or double-sided adhesive tape for damage-free mounting on frames, trim, and surfaces. The LED pairing indicator guides you through quick setup with the ADT Blu Base hub. Battery-powered operation means no wiring and clean placement on any door or window in your home. Expand your system step by step to cover every entry point, from front and back doors to garage entries, basement windows, and sliding glass doors. Ideal for apartments and rental homes where clean installation matters. Backed by over 150 years of experience and trusted by more than 6 million customers. No long-term contract required with flexible month-to-month plans. Requires purchase of an ADT compatible base and devices with a paid subscription.