HMI systems products include the patented 482CRM. The 482CRM has the look and feel of a traditional rocker switch but is a programmable electronic module. The 482CRM can be as few as four rockers and up to eight in one bank. Each bank has only four wires. The 482CRM is rugged, robutst and sealled.The modules can be mounted on the exterior of the vehicle. HMI also has a 7" color digital touch screen display, the 650CDI. The display has four rubber buttons as well as touch screen control. The 650CDI has two CAN 2.00 communication ports on the back and a USB port on the front for so you can reprogram without removing from the panel.