This Fusion 8-Channel SPDT Relay Expansion plugs into the Fusion FXR Relay Expansion Port to add more relays to your Fusion series dual interface relay controller. Â This controller includes 8 LED status lights and 3 connection points per relay. Â This expansion may be powered by a 2.1mm 12VDC barrel connector or via screw terminals for direct wired power installations. Â On-board switcher regulator power supply runs cool and provides plenty of power for the logic of this design. Â FXR expansion input and output connectors allow it to mix anywhere on the chain of relay expansion boards. Â Mix different types of relays as your application requires. Â Product Photo Shows Optional Metal Enclosure and Pluggable Connectors.