Door sensor not firing on first event

Hi ?
I?ve got an Aeon door sensor that was working great until recently. Now it typically does not ?fire? on the first time the door is opened. If I close and open the door a second time, the trigger fires.

I have replaced the battery, and I noticed that on the first attempt, the red sensor light triggers.

Here is the Device Settings:
Device_Type: urn:schemas-micasaverde-com:device:MotionSensor:1
Device_File: D_MotionSensor1.xml
Capabilities: 82,156,0,4,32,1,R,B,RS,|48,112,113:1,114,128,132:1,133,134,156,
Nodeinfo: 30,70,71,72,80,84,85,86,9c,
PollSettings: 10800

I?m not sure what to do next, any ideas?

My bet is that it is a communication issue. perhaps the first route is unreliable.

I would try moving the Vera close to the device and see if the reliability improves. If it does, then you need to improve your Z-wave coverage.