I have a detached garage close to the house. I was considering installing a 2gig recessed door sensor on the mandoor, but then I saw the low end of the operating temperature range is 32F.
Is there a better solution for a mandoor on a detached garage? The Honeywell 5818MNL recessed door sensor doesn’t specify an operating temperature range. Honeywell does have a surface mount outdoor rated sensor 5816OD that is rated down to -40F, but the recessed look is nice. If a recessed solution doesn’t exist I’ll go with the 5816OD.
The Ion Plunger is a little better - it can go down to 10F: