Specialty Concepts SCT - Manual (Page 5)

MOUNTING INSTRUCTIONS:
1. A suitable location must be found for mounting the SCT. Select a location away from heat
sources if possible, and close to the battery.
2. Follow the instructions for the system installation, including the array, battery and controller
installation and wiring. Determine a proper location for the SCT and run the battery and
load wires up to the timer, leaving sufficient wire for easy connection. Insure that the
polarity of the wires is marked.
3. Secure the SCT to the selected location using the four mounting holes provided on the
chassis, and suitable fasteners.
WIRING INSTRUCTIONS:
1. Refer to Figures 1 - 4 and WIRING DIAGRAM NOTES for specific instructions.
SETTING THE TIME PERIOD:
The "ON" time is adjustable from 10 minutes to 15 hours by turning a trim pot, and can be
accurately set by timing the flashing time-base light located on the front of the timer. In most
locations this unit can also be used as a "DAY/NIGHT" switch by turning the time period to the
maximum period of 15 hours. Since the timer shuts the light off after the timer period is up or
when the sun rises, whichever occurs first, the timer will turn the light on at dusk and off at
dawn. Using a small, slotted screwdriver, turn the adjustment trim-pot for the desired time
period. To insure a more accurate setting, use the TIME BASED LED in conjunction with a
stopwatch in the following manner:
1. Observe the TIME BASED LED. It will flash at a duration dependent upon the setting of the
trim-pot. Use the following chart to determine the actual time period for which the timer is
set.
LED TIME ACTUAL LED TIME ACTUAL
PERIOD TIME PERIOD PERIOD TIME PERIOD
1.76 Seconds 1 Hour 15.82 Seconds 9 Hours
3.52 2 17.58 10
5.27 3 19.34 11
7.03 4 21.09 12
8.79 5 22.85 13
10.55 6 24.60 14
12.30 7 26.37 15
14.06 8
2. When measuring the time period, consider one period of the TIME BASED LED as one
complete cycle; from the light just turning on (or off) to just turning on (or off) again.
3. For intermediate time periods, use the following formula:
LED TIME PERIOD (SECS) = TIME PERIOD (HRS) x 1.76
For example: If a time period of 3.6 hours is required, one cycle of the TIME
BASED LED should last 6.34 seconds.