In many industrial applications, 12V or 24V control signals are required. However, most embedded controllers support only TTL level (0-5V) input or output. The Relay7 (R7) is designed to support TTL-level and high-voltage (up to 30V) signal conversion. Seven power relays are provided on the R7. Each power relay provides Normal Close, Normal Open, and COM contacts, and are rated for 10 A operation.