The Station Master Pro is a battery-operated irrigation system diagnostic tester combining solenoid activation and wire identification. LEDs indicate if sufficient voltage is being supplied by the controller and the condition of the solenoid. The solenoid activation mode is used to activate valve solenoids either from the controller or at the valve, along with testing continuity of the solenoids. Chatter mode assists in locating the valve by ear. Tone generator helps identify wires when combined with inductive probe. The test leads allow the technician to connect the unit without cutting or stripping the wires.