Rain sensor for attic window?

Neil_Sedaka

Hi all,

Just narrowly avoided a flood in the house.
One of the kids left the Velux window in the attic room open overnight.
Just happened to go up there earlier and found it open, luckily there was no rain last night.

The room is used as a play room, but only every now and then.
There must be some sort of moisture sensor that I can attach to the frame that blasts a siren when it detects moisture.

I know you can get cheap sensors for overflowing baths and cellars but this one would need to be fairly sensitive.

Any ideas?

Thanks.

Mr Simpson

Velux do a rain sensor, if I remember correctly. Think its pricey enough though

paddy147

Neil_Sedaka wrote: »

Hi all,

Just narrowly avoided a flood in the house.
One of the kids left the Velux window in the attic room open overnight.
Just happened to go up there earlier and found it open, luckily there was no rain last night.

The room is used as a play room, but only every now and then.
There must be some sort of moisture sensor that I can attach to the frame that blasts a siren when it detects moisture.

I know you can get cheap sensors for overflowing baths and cellars but this one would need to be fairly sensitive.

Any ideas?


Thanks.

You could also fit a restrictor plate/hinge,so that the Velux cant be opened fully,only opened around 75-100mm to allow in fresh air.


This would also stop rain fall from entering.

paddy147

You need to have elecric velux roof windows though for the velux rain sensor.


http://www.goodwins.ie/p-10869-wla-51051-velux-rain-sensor.aspx

Mr Simpson

Isn't that just a motor that can be retrofitted?

Neil_Sedaka

Thanks all for the replies.

Don't want to go the motorised sensor closing thing, way to expensive at the mo!!

I'm wondering if I could use a cheapo bath overflow sensor like this and maybe solder a piece of wire between the sensors, so there is only a gap of about a couple of mm or so.

I really just want a heads up that the window is open and it rains.
Happened to a neighbour last summer, she left the Velux open and was alerted at 4am when she heard the dripping of water on the bedroom floor!

Neil_Sedaka

Or even cheaper, this

Any thoughts?

dodzy

Neil_Sedaka wrote: »

Or even cheaper, this

Any thoughts?

Something tells me that by the time this baby goes off, you will have a playroom.....with a built in paddle pool.

Neil_Sedaka

I'm hoping to mod it in some way by soldering some wire and leaving the slightest gap between the two contacts, that way it should only take a good sized droplet to make the connection.

Don't know, but worth a shot.