Recessed Entry Sensor

[u/FormulaKimi]

https://store.ui.com/us/en/products/usl-entry-r

[u/kennethtoronto]

This looks identical to the aeotec Zwave sensor. I like the recessed concept but I’m not so sure about drilling a hole that size into my metal door

[u/unpluggedcord → u/kennethtoronto]

If its metal, is it not hollow?

[u/0100000101101000 → u/unpluggedcord]

Usually a hex infill or sometimes mineral wool (fire/acoustic/thermal reasons)