The Best Motion Sensors & Detectors 2025

1. Entry Sensor

Protect your doors, windows, cabinets and more with SimpliSafe Entry Sensors. The Entry Sensor is designed with a tiny magnet to detect when one opens. When the magnet moves more than two inches away from the sensor, it sounds the alarm. If you have a 24/7 Professional Monitoring Plan, it alerts the monitoring center who will dispatch police fast if there's an emergency. You can even set up Secret Alerts that will send a discreet notification to your phone instead of sounding an alarm. That means SimpliSafe Entry Sensors are perfect for preventing break-ins and protecting the liquor cabinet.

Compatible with the SimpliSafe Gen 3 home security system

2. Ring - Alarm Motion Detector (2nd Gen) (1-Pack) - White

Connects to compatible devices via 3G, 4G, 4G LTE or Bluetooth; Split-Spectrum, ionization and photoelectric sensors; Nest app (download required); mounting hardware included

Ring Alarm Motion Detector expands your Ring Alarm and adds an extra layer of security to your home. When your Ring Alarm system is armed, the Motion Detector sends instant alerts to your phone and tablet whenever motion is detected at home.*Ring Protect subscription required, sold separately. The Motion Detector is a simple addition to your Ring Alarm that installs in minutes. Simply place your Motion Detector in a corner of any room in your home, connect it to your Ring Alarm Base Station, and you’re all set up!

3. Ring - Alarm Motion Detector (2nd Gen) (2-Pack) - White

Connects to compatible devices via 3G, 4G, 4G LTE or Bluetooth; Split-Spectrum, ionization and photoelectric sensors; Nest app (download required); mounting hardware included

Ring Alarm Motion Detector expands your Ring Alarm and adds an extra layer of security to your home. When your Ring Alarm system is armed, the Motion Detector sends instant alerts to your phone and tablet whenever motion is detected at home.*Ring Protect subscription required, sold separately. The Motion Detector is a simple addition to your Ring Alarm that installs in minutes. Simply place your Motion Detector in a corner of any room in your home, connect it to your Ring Alarm Base Station, and you’re all set up!

4. SimpliSafe - 4pack Entry Sensor - White

SimpliSafe - 4pack Entry Sensor - White

Easy to install on every type of door or window. The magnet goes on the door or window, and the sensor goes on the frame (or vice versa). Magnet can be placed up to 2 inches from the sensor, so sensors fit on all types of doors and windows. SimpliSafe sensors come with the battery pre-installed and adhesive tape pre-applied, making set-up a snap.

5. TP-Link - Tapo TTB10 Smart Sensor Starter Kit - Motion Detector, Contact Sensors, and Hub Included - White

Stay informed and protected with Tapo's comprehensive home security solution. Monitor doors, windows, cabinets, refrigerators, and mailboxes for suspicious activity and receive instant alerts. Customize motion detection sensitivity for precise coverage, up to 23 feet. Deter intruders with a loud alarm triggered by motion or door sensors, and receive real-time notifications. Review detailed event logs in the Tapo app for added peace of mind. Centralize your smart home with the Tapo Hub, connecting sensors, switches, and buttons seamlessly while extending battery life. Enjoy easy installation with tool-free setup and flexible mounting options.

6. GE - CYNC Smart Wire-Free Motion Sensor - White

Motion sensor; adjustable sensitivity; up to 30' detection range; 100° field of view; battery-powered design; up to 2 years battery life; mobile alerts; works with Eufy Security HomeBase; easy installation

The Wire-Free Smart Motion Sensor adds programmable motion to Cync and C by GE Smart Bulbs, Smart Switches and Smart Plugs. The sensor automatically turns lights and devices on when motion is detected in the room and turns them off when the room is unoccupied. The smart Bluetooth sensor connects wirelessly to Cync and C by GE Smart Bulbs, Smart Plugs and Smart Switches to provide whole room motion control. The motion settings are adjustable so lights can come on slowly at nighttime or be set to deactivate during certain times. Set lights to turn on based on natural light and motion in the room. Pair with a Cync or C by GE Smart Plug and automatically turn off devices like curling irons after you left the room. With a replaceable battery rated to last over two years and multiple mounting and positioning options, it's easy to get expansive motion coverage anywhere in your home.

7. Swann - Wireless Motion Alert Sensor (2-pack) - White

Compatible with Philips Hue system, Apple's HomeKit, and Amazon Alexa; meets Zigbee protocol; integrated daylight sensor; battery-powered

Attach this Sensor where it’s needed to detect and notify you of movement involving heat and motion from people or pets. Use it to monitor entrances, thoroughfares, spaces requiring authorized entry, anywhere beyond your line of sight to detect motion, movements and much more! The PIR (Passive Infrared) Motion Sensor can be integrated into a complete security system managed on the Swann Security app to receive alerts. It can even be connected to the Indoor Siren for an audible and visible alarm that’s a powerful deterrent for intruders.