Monoprice offers the Z-Wave Plus Recessed Door/Window Sensor for $24.99. Coupon code "ZWAVE" cuts it to $19.54. With free shipping, that's tied with our mention from February and the lowest price we could find now by $9. This sensor is designed to work with the Z-Wave Plus network and detects when a window or door is opened or closed.

Also available is the Z Wave Plus Door and Window Sensor for $24.99. Coupon code "ZWAVE" cuts it to $19.54. With free shipping, that's $5 off and the lowest price we could find. This sensor is designed to work with the Z-Wave Plus network and detects when a window or door is opened or closed.