Could you confirm the printed on your detector so I can find the exact manual for you? TREASUREmaster® and TREASUREpro Owner’s Manual
For more specific brand support, you can browse manual archives at MetalDetector.com or Minelab . Treasure Sensor 4000 Manual
Generally, a low tone indicates iron or junk, a mid-tone suggests aluminum (like pull tabs), and a high tone signals coins, jewelry, or silver. Could you confirm the printed on your detector
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