Yale HSA 500 keeps alarming

[Scrumpycider]

Hello all, I hope you can help me. I have a Yale HSA 500 that my husband installed over 30 years ago. He died last year. The alarm keeps going off even though it is never set because I have a newer system. It went trough a phase of this last year saying area 2 was being tampered with which was the landing. I tried changing the batteries to no avail and eventually took the sensor off the wall and the alarm didn't sound again. Now it has started up once more again saying tampering in area 2. It sounded at 2am this morning and again just now as well as yesterday. My neighbours must hate me.
I have MS and cannot get up to the siren box to tinker with the tamper switches which is all that Yale support will suggest while telling me that the alarm is too old for them to support or advise on. I am also existing on a tiny pension and do not want to get an electrician if there is anything I can do myself.
Please does anyone know how to nibble the alarm from the control box so that it never ever sound again? Surely there is a way!
Thank you

 

[Wayners]

You can cut a hole in the siren box and cut the siren cable.
Then if you want, take the alarm box off which will be silent.
Know anyone with a ladder. Local handyman ect won't cost much

 

[secureiam]

It will stop eventually as it’s battery powered.
And switch off the old control box.

Where you based?

Can a neighbour with a ladder help out?

 

[JohnD]

HSA500 is very old. Can you post some photos of the control box, if any, and whatever else you have?

If it has batteries in the bell box they might last a couple of years, but you may possibly have a transformer supplying it from the mains. This can be unplugged, and the bell will (should) stop after 20 minutes. The systems I have experienced have wireless sensors, sending to a control box, and the control box turns the siren on. So if you disable the control panel, it will stop.

If I can see what devices you have I may know how to disable them.

The bell box on the wall can go off if it is moved, for example by strong winds or branches hitting it.

If you still know a window cleaner or gutter repairer who works off a ladder, you might get them to remove the bellbox.

 

[JohnD]

Power supply may look something like this. The old ones were white.