All of my v2 motion sensors are corner mounted with screws. The back plate of the Motion Sensor v2 is a bracket with predrilled holes for corner mounting with the included screws and wall anchors or adhesive backing. Once mounted, push up and slide the motion sensor up off the mounting bracket to relocate or access the batteries. Slide the motion sensor back down onto the mounting bracket to reinstall. My v2 entry sensors are also screw mounted, but I had to drill the back plates.
