HRC 100 Battery

The HRC 100 Controller requires a CR2032 Lithium battery for proper operation. The battery will maintain your program in case of an AC power loss and should last approximately one year.

  • Open by sliding the battery tray out to the right
  • Insert one CR2032 battery into the compartment with the + side up
  • Slide back into place.

A weak or missing battery can cause the time, date, and program to be erased after a power failure. If this happens, you will need to install a fully charged battery and reprogram the controller.

Tip: Replace the battery every year, to avoid loss of programming

Note: A battery alone will not operate the valves in your sprinkler system. The sprinkler controller has a built-in transformer that must be connected to an AC line voltage source.

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