HJMG3 Joystick with Grip OTTO HJMG3 Joystick with Grip features a 4.5VDC to 5.5VDC supply voltage, 10mA supply current rating per sensor, and 1 million life cycles. The HJMG3 series offers Contactless Hall-effect technology, multiple output options, analog and digital, and is designed for armrest and panel mounting. OTTO HJMG3 Joystick with Grip is ideal for construction, off-highway, material handling, and specialized industrial equipment applications