BD Loops 4' x 6' Preformed 3/16" Saw-cut 20 Foot Loop sw420 motor or a POTS (Plain Old

or a POTS (Plain Old Telephone Service) connection

In the event of battery failure

Each is selectable by the system operator or restricted based on the time and day of the week

LiftMaster 041B3869-3A Belt Drive Trolley Kit

24 Vac power supply

BD Loops 4' x 6' Preformed 3/16" Saw-cut 20 Foot Loop sw420 motor or a POTS (Plain OldBD Loops 4' x 6' Preformed 3 16" Saw cut 20 Foot Loop Used for saw cut installations where a 3 16 or larger groove is cut into the concrete or asphalt and the wire is stuffed and sealed (using loop sealant) into the surface. Saw cut loops have a custom durable polyethylene outer jacket that protects nylon coated polyethylene insulated 16AWG stranded wire. BD Loops Saw Cut Loops have a built in wing shaped backer rod that causes the loop to fit snugly