Click on the product you are using to see how it mounts to the Pop-Link Bracket.
Banner Presence Plus4 Camera mounts to PL-CB4
Banner Q4X Series Sensor mounts to PL-SB50 Holes G & J or H & K (clearance for 3mm bolt)
Banner Q5X Series Sensor mounts to PL-SB50 Holes A & C (clearance for 4mm bolt)
Banner VE Series Camera mounts to PL-CB1