Zooz Z-Wave Plus 4-in-1 Sensor ZSE40 VER. 2.0 - $27.95
The Smartest House is having its BF/CM Mega Sale. Specifically of note, these sensors seem like quite the SD. Sale ends on 12/7/20 11:59 PM ET or when sold out. Can't be combined with any other promotional offer or discount. Free shipping in the U.S. on all orders over $75.