Dimco-Gray 451 Elec Timer-Intervalometer

An economical two memory switching timer that's moisture and dust resistant
This versatile simplicity of this solid state digital timer makes it a sensible choice for a wide variety of uses: in the factory, the lab, or the photographer's studio, it delivers reliable and repeatable accuracy.
The Model 451 has two independent, separate programmable memoris. one controls on-time, the other controsl off time. Use one memory alone for single cycle switching timer. Use both in tandem for a continuous recycling interval meter.
Two digit LED display
Easily adjustable membrane controls
Automatic reset
Minutes, seconds and tenths
Three audio signal choices