Wireless Home Alarms

I need to get a wireless alarm for the house. There is no limit to the number of companies that could supply and fit one so I would rather have some recommendations from people who have used particular companies and who can vouch for them.

I'm based in Dublin and I don't need or want a monitored alarm system. Ideally, I would like a system that will text me and others when the system is tripped.

If you have any recommendations they would be much appreciated. Thanks!

I know some who recently used DeJay Royale in Lucan and found them good

Not for wireless but I have dealt with http://www.altor.ie a few times and found him a nice guy and very reasonable.