Iris Motion Sensors 3326-L2 $14.99 @ Lowes

Just FYI - not bad price

Yep, been happening a lot lately with the CentraLite models: Lowe’s Clearance Sale including some Iris devices

They've already introduced a new motion sensor, so this may be in preparation for the launch of similar new revisions to replace these "v2" sensors (-L/-L2, and it's not clear what the "L2" differences are that also put the plain "L" models on clearance in many places recently as well).