Alarm PIR for high humidity?

unclebob1 · 18 Feb 2019

Hi all,

I have a window in the bathroom which backs out onto a flat roof of my extension, so an easy entry point.

Unfortunately the bathroom hasn't got the best of extractors so does get steamy in there regularly, and the door is temperamental unless locked from the inside so cant use door contact on the bathroom door (plus by then a burgler is already in the house!)

Are there PIR's for high humidity areas? if so anyone care to share any experiences with them and recommendations?

secureiam · 19 Feb 2019

PIR's don't pick up outside of buildings normally.

the problem with any device in a bathroom is condensation, I don't recommend anything in a bathroom for that reason.

however, depending on the size of the bathroom and the apparent condensation max points, usually near the window I have placed Dual techs near the door facing the window, and covert shocks or contacts in the window frame.

the window frame bathroom wall side is usually where the water will condense out, so inside the frame is protected a little.

You can get spray on coatings which may help to protect the electronics.

Not sure if an intrinsically safe PIR would be of any use but these if I recall they are extremely expensive, when I say expensive will cost you several hundreds if not more for one sensor, you still may get a wet lens, but nothing should get inside the electronics.

Lower · 19 Feb 2019

What about putting a PIR on the outside of the wall looking down at the flat roof?

Sally2000 · 19 Feb 2019

Why must it be a PIR?
If there is only the one access window, why not put a glass break detector on it.

unclebob1 · 27 Feb 2019

Sally2000 - same issue if i but glass break, only the condensation will be more as the window is colder!

scott1980 · 27 Feb 2019

I think in this situation, unless you go for an external rated PIR (big and expensive) then the best solution in this scenario would be a PIR outside the bathroom (landing?) or flush contact on the bathroom door itself.

unclebob1 · 27 Feb 2019

thanks scott, may get a normal pir and try it in the bathroom, if it constantly sets off, then will pull the cable back up and drop it to the other side of the door frame pointing down. if it knackers within a few months due to heat, then when i change, i'll move it. Guess its taking a chance and see how we go...

sparkymarka · 27 Feb 2019

About 20years ago I fitted ( by request ) a pir in a bathroom it was a pyronix magnum , sealed the cable entry with silicon and smeared some Vaseline on the pir case lip ...to be honest it never caused a problem and it was a monitored system ...but I guess it depends on the bathroom and how good the extraction fan is ...

secureiam · 27 Feb 2019

In a large bathroom I have seen wireless shocks on windows not sealed and they have been in over 5 years and no issues, they also have a decent extractor fan.

inside a wet environment you need something designed for it.

Intrinsically safe are very well sealed and relatively small but they aren't pretty and they are expensive.

outdoor pirs are usually more expensive than their indoor equivalents and bulky as already mentioned.

If the device isn't wireless, then sealing the unit may be an option, but only say with a decent pir with a well fitted lens.

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Alarm PIR for high humidity?

Similar threads