Early moisture sensor on top, production one on bottom. Originally these were V-scored, which means that the panels of sensors have grooves to snap them apart, and provide support along the long edges during assembly, but it left a rough edge that might give you fiberglass splinters. Not great — so we redid them with a fancier process.
The new moisture sensors have a nice smooth edge produced by a router. It took extra time to make sure it would hold up in assembly, but we think it’s worth it. And now we’re shipping them!