In preparation for my renovation, I detached the garage door contact sensor and the magnet, which as expected, caused a tamper alarm.

 

The sensor has been put back together and my hope was, I'd bind the two together until the work is done in that area but what I'm finding is the control panel shows a tamper alert when the magnet is brought into proximity with the sensor. No fault is there when they are separated.

 

What might be the issue? Here's what the sensor looks like inside.

id say your puttin gthe magnet to the wrong side of the contact and you have a grade 3 door contact

Is there an issue with it being Grade 3?

I have tested it on two sides of the sensor but it's the same issue. Perhaps it matters what the poles of the magnets are used? I haven't tried that yet.

The interference reed switch will make it tamper.

Unit needs closing up and the magnet part the correct way around on the correct side of the reed part.

You'll have fun re-installing it too if you plan to do that.

14 minutes ago, ywu said:

Is there an issue with it being Grade 3?

I doubt if your messing with it yourself grade 3 equipment is required.

 

But a grade 3 device is a high security one designed to detect if someone is trying to defeat it with a rouge magnet or one in the wrong location. There will be arrown on the case indicating where they need to line up and it wont have anything like the same tolerance of a grade 2 contact.

Id also tidy up your wires there is too much exposed

There was a gap of around 0.75 cm between the sensor and the magnet before. Maybe i'm putting them too close together and they need that air gap?

 

I've now tried multiple orientations and it still triggers.

Edited May 22, 20241 yr by ywu

I think that's resolved it. I've got an airgap of about an inch between sensor and magnet and it's enough for the alarm to say it's "secure" that the door is "closed".

Edited May 22, 20241 yr by ywu