To control cost
(and almost anything else)
think inside the box

OPERATION: Upon application of input voltage TD1 begins. At the same time, the TD2 ON time begins and the output (relay or solid state) energizes. At the end of the ON time, the TD2 OFF time begins and the output de-energizes. The equal ON time OFF time cycle continues until TD1 is completed at which time the output de-energizes.
RESET: Removing input voltage resets the time delays, output, and the sequence to the Interval function.
Function can be applied to these Series:
(Click to View Data Sheet) KSPD, KRPD, NHPD, HRPD,

V = Voltage    NO = Normally Open Contact    R = Reset 
   NC = Normally Closed Contact    TD1, TD2 = Time Delay