Occasionally it either doesnt detect someone entering the doorway, but for the most part it works well, but I have this mounted about 12 inches above the door way, which is probably sub-optimal.
Works ok sometimes goes off when sun hits it had to build a box around it
DIY type of product. Great to use for security household purposes. Would get more if necessary.
the front. Customer movement anywhere in the vicinity and the sun/clouds sometimes make it go off as well as it does sit near the windows.Works fine, just a bit sensitive. We have it in our shop to let us know in the back when a customer enters