The Sand Shark has two distinct operating modes: VCO and Normal. When working in the VCO mode, as targets get closer to the coil, the threshold generates a louder and higher pitched tone and is great for pinpointing. The Normal mode works with a single tone and is used for beachcombing and other prolonged searches. We've added a microprocessor to help you custom-ize the detector to your specific needs. First there is the pulse width control-it allows you to tune your detector to the best balance of depth, sensitivity, and battery life. You can also change the audio frequency that you hear in Normal mode. Simply use the "F" Adjust knob to set the tone and you're ready to go. The Sand Shark also has a new drop-in battery compartment for quick and easy changes..
Pulse Induction (PI) detectors have always been the natural choice for working wet salt beaches. Their circuitry and single loop coils will not see changes in salt-water conductivity that drive a VLF-style detector crazy. Add Tesoro Electronics' exclusive interchangeable Printed Spiral coils (available in four sizes) and you create a fantastic PI detector. But they didn't stop there.
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