Bircher reglomat cesm-21cb-4848 durable and reliable pressure- sensitive safety switch mats, ramp trim kits (sold separately) and safety controllers (sold separately) from bircher reglomat. for protection of people around machinery, robots and other hazardous areas. when a person, forklift, or other vehicle activates the mat, it sends a signal to the controller to stop the machine. may also be used as a signal mat for activation of a device or counter through presence detection. features: molded, totally sealed design is water resistant nema 4 (ip67) protection class meets pl e, safety cat 3 acc. To en iso 13849, test acc. To en iso 13856-1 when used with safety controller easy to install two-wire fail-safe connection is achieved when used with bircher reglomat safety controller & resistor (resistor supplied complimentary) can also be wired as a four-wire system each mat supplied with two 12 foot 2 x 20 awg wire leads inside 5 awg pvc jacket, exiting the middle of one side of the mat mat is black with non-skid diamond surface pattern