ritcheyvs
Veteran Member
Wireless DIY alarm systems are pretty reasonable these days, with several listed on ebay (mine came from alarmsellout.com). Installation is not hard and you can program them to call your cell, a trusted neighbor, and/or a professional monitoring service if an alarm occurs. The newer ones monitor battery status for each sensor (a good feature, IMO) and have battery backup for the control panel and remote sirens. I don't know if they are easily jammed but jamming would require some prior knowledge of the specific system (like operating frequencies).