Aleph DC-2531 WG W Surface Mount Alarm Magnetic Contact Package of 10 Review Gobling April 19, 2018 August 29, 2018 No Comments on Aleph DC-2531 WG W Surface Mount Alarm Magnetic Contact Package of 10 Review This fits your . Make sure this fits by entering your model number. (1) Aleph DC-2531 WG W Surface Mount Alarm Magnetic Contact package of 10 Self-Adhesive Mount, Nail Mount 18 in. Side Wire Leads