I have an existing wall mounted PIR Motion sensor and I need to open the case to see how it is wired (all of the wiring was done with cat 3, so not sure what pairs were used on the device end) the problem is I am unable to figure out how to physically get the box open. There aren't any identifying marks on it so don't know the manufacturer.
The only thing I noticed is a screw next to an unlocked padlock symbol, but after trying turning it to both positions ( I am assuming there is an open and a locked position ) I can't figure out how to proceed any further.
I attached 3 pictures.
Any help would be appreciated. Thanks