The Pro700 Duo Wire and Valve Locator finds lost wire and valve boxes easily and efficiently.  Incorporating a powerful transmitter and sensitive receiver, the Pro700 tracks irrigation wires, finds missing valves, and detects serious damage to vulnerable underground cabling.  The Pro700 transmits either a traditional pulse signal or a solid tone signal better suited for troubleshooting.  To operate, simply connect the transmitter to ground and the wire to be tracked and turn it on.  Follow the tone with the receiver using the visual meter, external speaker, or a stereo headset.