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AUTOMATIC
SPRINKLER TIMER
Owner’s Manual PRT-4 / PRT-6
For use with standard 24 VAC automatic sprinkler valves. These timers are designed for use in any 110
VAC /60 Hz ±10% AC outlet (240 VAC, 50 HZ for international version). The PRT Sprinkler Series
Timers provide simple programming and flexible schedules to meet your landscape watering needs.
We recommend you read this Owner's Manual completely before installing the timer to ensure proper
operation and safety.
Thank you for choosing the OPTIMA PRT-4 / PRT-6 Timer. Several innovative features allow you the
flexibility to tailor your program to fit a variety of watering requirements; and, best of all, it is easy to
program!
• Simple to use dials and buttons.
• Three available start times for each station to give you maximum flexibility.
• Off and Winterize features allow you to keep all your program settings while turning off your system
when you want!
Just in case, if you have questions, please call us toll free at 1-800-742-9922. (U.S.A., Canada & Mex-
ico).
ABOUT YOUR LAWN
Optima's PRT Series Sprinkler Timer is the central unit that controls watering times for your automatic
sprinkler system. The following information provides an overview of how the timer works.
Stations
To meet the different watering requirements of your lawn, trees, flowers, and other landscaping, you
can divide your yard into separate areas called "stations" or "zones".* Each "station" has one valve that
controls multiple spray heads or sprinklers. For example, if you have 4 valves, you can divide your lawn
into 4 "stations". See the figure below. (You cannot link more than one valve to one "station.") You can
however, select a different length of watering time for each "station".
* In the sprinkler industry, the terms "stations” and “zones” have the same meaning.
Station
3
Station
2
Station
1
Station
4
House
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