DT8M Wireless PIR Lost Connection

[ITGURU]

I have a honeywell G2 system with majority of sensors wired, but i have 1 wireless PIR DT8M.
For some random reason i walked into the room with the wireless PIR sensor and noticed on movement that the red LED was no longer lighting up.
I went into zone walk test and set active, however one movement I get no alert that the detector has detected me.
I can fully set the system without any issues.
Surely if the sensor is not connected properly the panel should be reporting a fault or missing device?
It's only been installed about a year with new batteries at install, so could anyone shed any light on this for me?
Seems that when the system is set , the detector would not detect motion and cause an intruder alarm.
Thanks.

 

[scott1980]

They do go to sleep, try putting the system into walk test, don't walk in front of the detector for about 5 minutes, then try to trigger it again.

 

[ITGURU]

They do go to sleep, try putting the system into walk test, don't walk in front of the detector for about 5 minutes, then try to trigger it again.

So would it still activate as an intruder zone when the system is set? I didn't want to try it and annoy the neighbours!

 

[Handymanjo]

If you set your alarm system and then trigger that zone it would prove if it was working or not.
Give you piece of mind.