Do you have a wireless burglar alarm? (...ooh I'd love a wireless burglar alarm)

[champagnesupernova]

And if so, does it interfere with your wireless internet?

[PigletJohn]

I fitted one for my old mum, and, no, it is on a different frequency.

Professional installers sneer at them, but they can be cheap to buy and easy for a DIYer to install in an hour or two. You do need to read the instructions, preferably twice.

Last time I looked they were on special offer at Screwfix.

I would definitely get one that connects to the phone line and calls keyholders in the event of an alarm. If you have a biggish house or outbuildings, it is more economical to buy an additional basic kit and use the parts it contains, than to buy several individual sensors as individual parts.

[champagnesupernova]

Ooh piglet you are v kind

[PigletJohn]

p.s.

however the wireless router can sometimes interfere with the alarm panel, if it is close, so mount it somewhere else. You can walk-test all the components before you fix them, so you can use blu-tak first and move any that are too close.