What contact switch do you recommend for tgis type of roll up door?

[adamant118]

I had a steel carport structure installed that has three roll up doors. Two doors are across asphalt and one is Mounted aCross stone. Here is some pics

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[bababouy]

What are you using the contact switch for? I am assuming a burglar alarm system? maybe one of these.

 

[adamant118]

Exactly what I used. I will post a picture in a little bit

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[tangent]

If you ever have issues with wind setting it off, you can add a second sensor wired in parallel on the other side of the door so both have to trip for it to alarm.