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The Holman Chatterbox helps locate electrically operated irrigation solenoid valves when their position is no longer obvious. It connects into the valve circuit at the controller; running the station manually makes the solenoid coil chatter so you can listen for the valve.
For one valve, the locator connects between the selected station terminal and its disconnected field wire. To work through several stations, it connects in the common-wire circuit and the controller runs the stations in sequence.
The unit uses the controller circuit and needs no batteries. Follow the user manual, including the pump-wire precaution for pump-fed systems.
Holman Valve Locator (Chatterbox)