Unused Robertshaw controls electronic vibraswitch - model: 376a-a3f4. Base dimensions: 5-1/6" L. X 6-1/16" W. X 5-1/4" overall height. Detector incorporates starting and/or monitoring time delay functions. For non-hazardous locations, enclosure meets NEMA 3, 4 and 5 specifications. Input voltage: 120vac +/- 10%, 50/60hz, 15w max, output voltage: 2amp max@120vac . This unit has a combination starting and monitoring time delay function, start time delay of 90 seconds, and a monitor time dalay of 10 seconds . Includes operation manual.