Just tried the new Z-Wave sensor Strips by sensative.com (they say it will be on the market 2015 Q3 - Q4). It?s really a revolution in home security! Less than 3mm thick with an included battery that will last 10 years. The sensor is thin enough to be mounted between the window and the frame invisible!
The post is in Swedish but in the right corner of the screen there are an Google translate function that works ok
[url=http://www.automatiserar.se/strips-den-osynliga-z-wave-sensorn/]http://www.automatiserar.se/strips-den-osynliga-z-wave-sensorn/[/url]
