best door alarm sensor

Rating details & item highlights

• quality
  5 out of 5
• value
  5 out of 5

• Monitor glass windows and doors.
• Receive notifications whenever breaking glass is detected.
• Detect the sound of glass breaking up to 25 feet.
• Subscribe to a Ring Home Standard or Premium Plan, sold separately, and add Alarm Professional Monitoring1, to choose to receive a call from the monitoring center when the sensor is triggered and request emergency assistance if needed.
• *Professional Monitoring is an add-on plan that first requires a compatible Ring Home subscription. Both sold separately. Service available within the U.S. (all 50 states, but not U.S. territories) and in Canada (excluding Quebec). Ring does not own its monitoring center. Smoke and carbon monoxide monitoring is not available for business or commercially zoned addresses. See Ring Alarm licenses at: ring.com/licenses. Additional fees may be required for permits, false alarms, or Alarm Verified Guard Response, depending on your local jurisdiction.
• Dimensions (Overall): .96 Inches (H) x 3.78 Inches (W) x 3.78 Inches (D)
• Weight: .4 Pounds
• Features: Controlled by Smartphone App, Senses Sound
• Assembly Details: Adult Assembly Required, No Tools Needed
• Mount Type: Adhesive
• Includes: Window or Door Sensor