User Guide

Connecting a Rain Sensor
• Connect the rain sensor wires to the wiring terminal
ports labeled “Sensor”.
Note: Refer to your rain sensor manual for specific wiring
instructions.
• Place the sensor on/off switch to the “on” position to
begin operation.
Rain Sensor Bypass
This sprinkler timer is equipped with a sensor override “on/off”
switch. This switch is for use during maintenance and repairs, so the
sprinkler timer can be operated even if the rain sensor is in active
mode.
Important: If the rain sensor switch is in the “on” position and no
sensor is connected, the sprinkler timer will not operate. To resume
sprinkler timer operation place the switch in the off position.
Pump Start & Master Valve
This sprinkler timer allows a master valve or pump start relay to
operate whenever a station is on.
Note: If you are activating a pump from this timer, you must
purchase a Pump Start Relay. From the pump start relay (or master
valve); connect one wire to the “Pump” terminal and the other wire
to the “Common” terminal.
Replacing the Battery
WARNING: Risk of Fire, Explosion, and Electric Shock. Replace
battery with Hitachi Maxell Ltd, Type CR2032 only. Use of a
different battery has the potential for a risk of fire, explosion, and
electric shock. See owners manual for instructions.
Timer requires a CR2032 Lithium battery
• The battery will maintain your time and date in case of an AC
power loss.
• Battery should last approximately one year.
• To remove, lift on the edge of the coin cell battery.
• Insert one CR2032 battery into the compartment with
the + side up.
A weak or missing battery can cause the time and date to be
erased after a power failure. If this happens, you will need to install
a fully charged battery.
Tip: Replace battery every year, to avoid loss of programming
Note: A battery alone will not operate the valves in your sprinkling
system. The sprinkler timer has a built-in transformer that must be
connected to an AC line voltage source.
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