Yes, it seems I need a heat detector. The doorway between our kitchen and dining room has a brick arch, and is too low to fit a fire door too - or any door, come to that.
I can't find a heat detector which is compatible with the 240v 9v backup smoke detectors I have already bought.
Is the answer to buy a fire alarm panel and connect a heat detector to that, and have two separate systems, or will that still not satisfy regs?
Or shall I just bite the bullet, fit a lintel and a firedoor and take the firedoor out again after Building Control have finished with me.
Every time I think I have got this job sussed it gets more complicated.
Am posting this is a slightly different form in the alarms section as well.
Thanks JohnD