The ABB 2TLA020006R2200 JSHD4-2 is an essential component of the JSHD4 three-position device, designed to enhance safety and functionality in industrial settings. Featuring both a front and top button, along with integrated LEDs, this top part ensures clear visibility and ease of use. It is compatible with various bottom parts, including AB, AD, AH, AJ, AK, and AL, providing flexibility in application. The anti-tamper option is available for all configurations except when paired with bottom part AK. This device is crucial for allowing controlled machine movement in hazardous areas, making it ideal for troubleshooting, test running, and programming tasks.