The GRI Low Voltage Switching Device (LVSD) is a 2A 12/24V DC controller with connecting wires for connecting to a DC Power Source, a DC Load and a Dry Contact Switch. This GRI Controller is designed to switch up to 2A of DC power with a C form relay that will power devices such as small motors, relays, fans, sirens, strobes and LED lights, and capable of switching from long distances using small gauge wire and most any proximity switch or dry contact device. Open loop switch required, not included. GRI has a complete line of open loop switches to meet your applications.