Door Alarm Magnetic Replacement 2 Pack, Magnet for Door and Window Alarm Sensors for Home Security System Wireless
- ...3ABattery batteries not included)【NOTE: 1. Take out the plastic insulation sheet in battery compartment before use, 2. The small triangle on the side of the strip magnet is aligned with the small triangle on the side of the alarm with a spacing of less than 0.39inch(10mm), 3. Your frame and window or door must be flush, make these two components must be installed very flush with one another】【Recommend you check the ba.