For a two-hand control device, the operator needs to have a Safeball for each hand to be able to operate a machine.

Safeball™ is a spherical ball containing two embedded pushbutton switches, one on each side of the ball. Both buttons must be activated to start and operate a machine.

HD5 three-position enabling device is used for troubleshooting, running tests, and programming.

JSHD4 three-position enabling device is used for troubleshooting, running tests, and programming.