The Models 331 and 361 Release Delay Timers are designed for a wide usage in new or replacement industrial applications. Examples include delay-off circuits, batch processing circuits, and other applications requiring a remote-triggered, off-delay timer. The Model 331 is a DPDT potentiometer (knob-adjust) timer. The Model 361 is a DPDT, high-accuracy digital input timer. Solid-state timing circuits in each model drive an internal electromechanical relay. Each model is functionally interchangeable. They are available in a variety of voltage and timing ranges to cover any application. An SG version of this model is available using silver with gold flash contacts.