We worked for The Deko® Smoke Alarm Detector Magnets from 2008, use 2 pcs D10x1 magnets, that 2 poles magnetized each side to increase magneti force, to fix the smoke detector safely.
When the smoke detector fix on wall or roof, we use 3M glue, after decades experiments, we finally choose 3M9448 grade, it's reliable to fix the smoke detector on PP,PE or glass surface very tightly.
We applied patent of 3 dot design- which fix 2 magnets D10x1 on smoke detector easily, it's simple and efficient job for workers.
