• Magnet: Install on the part of the window that moves or slides
• Sensor: Install on the window frame

If the window frame is too narrow, reverse the setup:
Place the magnet on the frame and the sensor on the window.

• Make sure the semi-circles on both pieces are aligned
• Pieces must be within 1 inch of each other (ideally ¾ inch or less)
• Mounting at a 90° angle is okay, as long as the distance is right

To ensure accurate detection and long-term reliability, do NOT install the sensor:

• In non-climate-controlled areas (e.g., garages, attics)
• Directly on metal or aluminum surfaces
• With the sensor and magnet more than 1 inch apart

Mounting on metal? Use a plastic spacer or magnetic tape for better performance.

1. Clean the mounting surfaces (window and frame)
2. Peel off the adhesive backing on both pieces
3. Align and place the sensor and magnet as described above
4. Press firmly on each piece for 30 seconds to ensure a solid hold
5. Test the sensor using your alarm panel to confirm it's detecting properly

For more detailed info, check the user manual included in your package.