The NI 9481E is a board-only, four-channel, single-pole single throw (SPST), sourcing digital output module for any NI Single-Board RIO device. Each channel provides access to an electromechanical relay for switching signals up to 30 VDC (2 A), 60 VDC (1 A), and 250 VAC (2 A) and features 250 Vrms channel-to-channel isolation. Each channel also has an LED that indicates the state of that channel. With the NI 9481E, you can directly connect to a wide array of industrial devices such as motors, actuators, and DC devices.