Multifunction irrigation testers are handy tools to have in any irrigators toolbox. Start with solenoid activation. The Pro48 can identify zones by activating the solenoid, especially helpful with a suspect or missing clock or just to tag wires and ID them. The associated chatter function does the same operation intermittently, a great way to find overgrown or covered valve boxes. These testers also work as a multimeter specific to irrigation, with LEDs that show the specific condition of zone wires and solenoids as well as clock condition. Finally, they act as tone sources so that, when used in conjunction with the Pro210F Advanced Tone Probe, a contractor can identify specific wires.