All devices must meet the general requirements for devices found in, Make sure devices meet these requirements, WAC 296-806-20044.

You must make sure pressure-sensitive mats:

(1) Detect the presence or absence of the operator or others.

(2) Send the stop command and prevent successive machine cycles if any single component fails.

(3) Are connected with the machine control system so the device's stop signal immediately stops action of the machine tool and requires use of the start control before the machine can begin another cycle.

(4) Are located so that the operator cannot reach the recognized hazard before hazardous motion has stopped.

(5) Have an indicator easily seen by the operator that shows the mat is operating.