The multi-piece HC-PROX3 delivers non-contact read ranges up to 6 inches (152 mm), and operates from 5 to 14 VDC. Physical size is a compact 4.5 x 1.6 x 0.75 inches (114 x 38 x 19 mm) for mullion mounting and 5.8 x 2.9 x 0.8 inches (147 x 74 x 20 mm) for single gang mounting. Mounting is simplified with horizontal and vertical mounting slots, instead of simple holes, which allow the reader to be conveniently adjusted and leveled. To allow both indoor and outdoor operation, the electronics are secured in tamper-resistant epoxy potting.