The JSD-HD4-350801 is a three-position enabling device without LEDs and two additional buttons, on top and front. The connection is realized via a Cannon 12pol. male connector. Please be aware that the internal wiring isn´t equivalent to the standard devices. To ensure the right function, please check the data sheet before ordering. Three-position enabling devices are used to allow limited movement of the machine when the operator is in the hazardous area, for example during commissioning, maintenance and troubleshooting.