A Timer Is A Specialized Type Of Clock For Measuring Time Intervals.It Help Protect Power Supplies By Eliminating Unnecessary Stops And Starts Of Equipment, And They Can Also Help Lower Energy Use By Turning Off Equipment Automatically. Grainger Offers Timers For Many Different Applications, So Today Businesses Can Be Energy Conscious While Still Benefiting From Their Electrical Equipment. SKU:7Pv07121Ad20 Product Features: 7Pv07121Ad20 – On Delay Timer With 1/C/O Contacts,230V Ac