ZOpid 2-in-1 Motion Detector and Door/Window Contact Sensor Mini Alarm System Alarm can be set for motion detection or door/window sensor, or both (user selectable) Wireless - simple installation - Mount alarm using 3M Tape (included) or Hardware Mounting Kit (included) 30-seconds entry and exit delays prevent false alarms - Create your own four digits security code Automatic reset once motion is no longer detected for 30 seconds Low battery level indicator - Uses 3 AAA batteries (not included) - One-year battery life