Quote Originally Posted by jason.ruff View Post
There are plenty on the market nowdays and are easy to setup as they are wireless. Here is one off ebay, cannot comment on quality. But for the price its a cheap investment.

http://www.ebay.com.au/itm/New-Wirel...0AAOSwImRYQPfx
I started out with one of those. Complete rubbish. False alarms all the time. Seemed to get all upset with temperature change among other things.
Ended up with a Bosch system and went back to a wired as wireless doesn't like colourbond steel sheds. On top of that the 9 volt alkaline batteries were good for about 2 months tops.