ISM Installation, Programming & Operation Guide
Page 4
Introduction
ISM Sprinkler Timer
Thank you for purchasing a Rain Bird ISM
Sprinkler Timer. This manual shows how to
install, program, and operate your irrigation
system timer (sometimes called a “control-
ler”). Please read these instructions carefully
and keep this manual in the slot behind the
timer for future reference.
The Rain Bird ISM is a compact, easy-to-use
sprinkler timer that offers the following
features:
• Three programs, with independent
watering days
• Up to four watering start times per
program
• Option to set any day of the week as a
watering day
• Seasonal adjust feature across all
programs
• Battery backup to retain time, date, and
programming during power outages
• Three-year Customer Satisfaction Policy
Sprinkler Timer Stations
The Rain Bird ISM is an electronic timer that
controls when your sprinkler system turns on,
and how long the sprinklers run.
The ISM can control 4, 6 or 9 watering
“stations” (depending on the model). A
station is a series of sprinklers, or other
irrigation devices, connected to a common
remote control valve. When the valve
receives a signal from the timer, the valve
opens and turns on the sprinklers connected
to it.
This illustration shows a diagram of a station
layout. Station 1 is currently watering. When
station 1 finishes, the timer shuts it off and
turns on station 2. When station 2 finishes
watering, station 3 begins, and so on.
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