We are very sorry you missed that this is a motion activated light. I've reviewed the description of the light and not sure how else to improve it as we mention it's motion activated many times.
|Product ID: SS9936|
|Weight: 0.55 kg|
|Product Barcode: 5060188641803|
DimensionsDepth 86mm x Width 208mm x Height 115mm
If motion is detected then the light will trigger and stay on until movement stops.
On page two of the instructions is a template for drilling the holes. You could testing printing the template and see if it works for needs. Instructions are here. Please ensure it printed to scale, double check by measuring the template..