Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy Installation | Base Station Required

Get free shipping on qualified Door Motion Sensors & Alarms products or Buy Online Pick Up in Store today in the Electrical Department.

With door and window alarm sensors, enjoy the additional peace of mind of knowing you’ll be alerted when a door or window opens. We offer a variety of sensors to accompany the most popular security …

Dec 31, 2025 · Discover the 7 best door sensors of 2026 for enhanced security. Compare features, pros, and cons to find the perfect sensor for your home.

Shop for Door Alarms in Alarm Systems. Buy products such as Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (6 Pcs) Home …

Shop Best Buy for door alarms and window alarms. Enjoy peace of mind by finding the right window & door alarm sensors for your home’s entry points with smart home integrations.

At The Home Security Superstore, we offer a selection of magnetic door alarms that are not only user-friendly but also compatible with most standard doors, making them an ideal choice for a wide range …

This entry sensor is designed to work with the security system, and it does not require a subscription to function. However, a subscription is needed to unlock additional features like 24/7 professional …

Oct 24, 2025 · Most door alarms use a type of contact sensor that relies on what’s called a reed switch and a magnet. When the door is closed, the magnet keeps that reed switch circuit closed. When the …

These sensors affix to the door or window and, if opened when the alarm is set, can trigger the alarm to sound and alert the authorities. Adding these sensors throughout the home makes your home …