Alarmtech MC 200-S21 snap-in adapters for recessed magnetic contacts, 25mm hole, 2 pcs

Alarmtech MC 200-S21 are plastic snap-in adapters for recessed magnetic contacts in non-magnetic door and window frames. They snap into a 25 mm hole in sheet of 1 or 1.5 mm, and the contact and magnet are screwed into them, which allows the operating gap to be adjusted.

Suitable for MC 240, 246, 247, 250, 255, 270, 272 and 275.