OPTEX XWAVE1 QXI 120 DEG OUTDOOR LOW OR HIGH MOUNT PIR,SMALL PET FRIENDLYThe BX Shield is a series of curtain outdoor motion sensors with up to 12m detection range on each side. Ideal to detect people in the immediate boundary of your home or office building, the outdoor detectors feature four PIRs, two on each side. The left and right detection area can be set up completely independently from each other. The BXS AM is the hardwired model with anti masking. Hardwired curtain PIR up to 12m per side with anti masking