BD Loop RL 20-40 Preformed Direct Burial Loop Doorking Barrier Arms Facility code or site code

Facility code or site code (constant for all cards in the order)

Dimensions (operator only): 13

Built-in DK Prox card reader

Support with a full description of your cards

Industry standard Wiegand and RS-232 data output

BD Loop RL 20-40 Preformed Direct Burial Loop Doorking Barrier Arms Facility code or site codeBD Loop RL 20 40 Preformed Direct Burial Loop 4' x 6' loop 40' lead Used for installations under concrete, asphalt, pavers, or gravel roads. The most common installation is the loop tied directly to the rebar before concrete is poured. Wire is UL 493 certified designed for a direct burial application. Unlike loops wrapped through PVC, The BD Loop does not have an air pocket resulting in fewer repeat service calls due to phantom detection caused by