The model 438UPI (Potentiometer Adjustable Interval Time Capsule) is an all Solid State In-Line timing device providing control of any load device operating from 115 or 230V AC or DC. Timing is
set via a potentiometer located between the input terminals and is adjustable from 5-480 seconds. When power is applied, the 438UPI turns "On" permitting full load current to flow. At the end
of the preset timing period the 438UPI turns "Off" and permits only leakage current to flow through the load.
Specifications
Digital Timing Circuitry 2 Terminal/In-Line Pot Timing Adjustment