Liftmaster 655202, Safety Edge Pneumatic 14' Sensing Edge with 2-Wire Take-Up Reel

MODEL 655202 Pneumatic 14' Sensing Edge with 2-Wire Take-Up Reel Sensing Edges Pneumatic Kit Pneumatic edge kit with exterior air switch. Includes 2-wire take up reel (20 feet extended) and 14 feet of air hose. A sensing edge should be used on every door for the protection of pedestrians and vehicles. Depending on the type of edge and type of control wiring of the operator with which it is used, the function of the edge will vary. Standard Edge: A standard 2-wire edge will cause a door to reverse when it meets an obstruction while closing if the operator has type B2, C2, S2, T, T1 or TS control wiring. Failsafe Edge: A failsafe edge (or self monitoring edge) requires either a 3- or 4-wire connection and will not only cause a door to reverse while closing but will also render the door inoperable if the edge is not installed or if it becomes damaged after installation. A failsafe electric edge requires an operator with type F2 wiring or the use of a CPS IIoption board. The infrared link-edge is inherently failsafe and requires only type B2, C2, S2, T, T1 or TS control wiring. WARNING: It is strongly recommended that some type of safety equipment be used with every door operator. Without safety equipment, serious injury or death may result!