Garrett CSI Pro Kit 1140780, Ground-Search Hand-Held Metal Detector, All Terrain Versatility & Unmatched Performance For Metallic Crime Scene Evidence Recovery
Iron Audio allows you to hear discriminated iron (normally silenced) to avoid digging undesired flat iron targets such as bottle caps or washers.
NOTE: To use the Iron Audio feature, some degree of Iron Discrimination must be set. In this demonstration, the Iron Discrim setting is at 35. Without Iron Audio, both the bottle cap and silver coin sound like good targets. With the Iron Audio, the bottle cap response includes iron grunts to indicate this might be a trash target.
The CSI Proalso includes three Standard audio modes, which provide a full-strength beep regardless of a targets amplitude. Many detectorists prefer this simpler, binary (either on or off) target response.