The distance of these two parts shall be less than 3-5 cm when the roller shutter/rolling door is closed.
5 reviews for Wireless Rolling Shutter Door Sensor Garage Gates Magnetic Detector Thickening Switch Anti-theft 433MHz Home Alarm System
+1
AliExpress Shopper
Rated 5 out of 5
October 21, 2025
Works perfectly and pairs with the alarm module well A+++
+1
R***r
Rated 5 out of 5
August 23, 2025
Works well. Good wifi range. Instructions a little vague. For pairing follow add video. But little white box attached has battery inside already. Remove back cover and slide switch to on position before pairing. Looks very well built.
5 reviews for Wireless Rolling Shutter Door Sensor Garage Gates Magnetic Detector Thickening Switch Anti-theft 433MHz Home Alarm System