2Pcs Magnetic Burglar Alert Sensor, Window Door Alarms, Sensor Alarm for DIY for Home Security, Office Protection

Easy installation wipe the surface, remove the sticker, install the alarm on the door, and install the magnetic strip on the door frame. Completed. Magnetic sensor switch detects your doors and windows.

Easy to install and operate, press the on/off switch to turn on/off the power, then insert 2 AAA batteries batteries not included in the box, tear off the double-sided tape on the backpack, and connect the door handle alarm to your target location.

Whether you are at home or outside, the magnetic sensor switch can detect the entrance that protects your home or office. Please turn off the switch when not needed

Package Includes 2 pcs Alarm Unit+Magnetic Sensor