I currently use both the Honeywell 5800PIR-OD which pairs directly with the 2GIG panel.
I also use the battery powered Optex HX-40RAM Outdoor Wireless PIR Sensor With Anti-Masking Technology which I has room in the housing to wire and embed a Honeywell Ademco 5816WMWH Transmitter.
These blanket my entire outdoor pool area with motion coverage. From there I use an Alarm.com rule to automate turning on my lights.
I don’t like having to go through Alarm.com for the automation, however the 2Gig panel rules don’t allow you to automate based on a single sensor. I also want to do more automation such as being able to sound an alarm if there is motion in the pool area while a proximity token isn’t present (like an RFID tag). I’m considering adding a Honeywell Panel -> NuTech AD2USB Adapter -> Vera Lite (z-Wave controller) just so I can have extra control over this stuff.
I wish that the new 2Gig panel was launching now and had features that would allow individual sensors to trigger z-wave scenes (especially from other controllers).
-Keith