The Kele DT13E is a signal isolator that accepts a current or voltage input and provides a linearly transferred current or voltage output. The input and output are electrically isolated, making the DT13E useful for ground-loop elimination, common-mode signal rejection and noise pickup reduction. The DT13E is designed to function effectively in electrically noisy environments. The DT13E can interface with recorders, data loggers, personal computers, programmable controllers, HVAC controllers, building automation controllers, variable speed drives, and other process monitoring and control systems. Snap-track is included for easy mounting.