The Model 30 is a High Voltage Multifunction Timer. The digital design of the Model 30 provides high accuracy, repeatability and response time. The output of the Model 30 is a heavy-duty DPDT electro-mechanical output relay.

Four DIP switches select one of four timing functions and one of four timing ranges. Delay time is set with a 10-position DIP switch. When timing either the red LED will blink indicating the relay is de-energized or the green LED will blink indicating the relay is energized.

On completion of the delay period either the red LED lights indicating the relay is de-energized or the green LED lights indicating the relay is energized.