Don't bother with pir's go with dual tech sensors they are more stable and accurate. CK or Pyronix are good brands bosch are big and ugly, the best external devices are Redwall but they will cost you a lot, unfortunately for people living in the US you are years behind the UK for small reliable detection devices.
Hi,
Do any of these dual tech sensors work with a portable receiver / alarm device, not via a control panel? I want to fix the sensor unit on an outside wall of my house (in the UK) and place the portable receiver / alarm unit in the room I'm sitting / working in.
I couldn't find anything like this on the Honeywell, Pyronix, and Optex websites, do you know who supplies them? Ideally the sensor and receiver / alarm units would be battery-powered, or plugged into a nearby mains socket, not linked to a control panel.
Thanks in advance for any information.