TAC UHMD
Underwater Handheld Metal Detector 

The TAC UHMD, featuring a circular search head, enhances the RHINO Detection range of underwater metal detectors with a cost-effective, user-friendly, and precise pulse induction (PI) detector. It is designed for a variety of applications, primarily focusing on the detection of small to medium-sized metal objects that divers can easily recover. This detector is capable of identifying both ferrous and non-ferrous metals, including gold and silver. With its circular search head, the TAC UHMD offers a wider detection range. The detection range for metal objects varies based on their size, location, material, and the conditions during detection.

MODE OF OPERATION
Employing a microprocessor-controlled pulse-induction process, the TAC UHMD underwater hand sensor generates weak magnetic pulses that create eddy currents in the targeted objects. These currents send back a magnetic echo, which the sensor converts electronically into a vibration alarm. The digital PI system allows for use in both freshwater and saltwater environments. Additionally, thanks to its static detection mode, users can infer the size and depth of the detected metallic items.

CONSTRUCTION FEATURES
The design offers several advantages that truly stand out: it boasts a small, compact structure, features a vibration alarm, requires no headset, and eliminates the hassle of connecting cables! The electronics and battery compartment are conveniently integrated into the handle. The closure screw located at the end of the handle activates or deactivates the detector with a simple clockwise or counterclockwise turn. Access to the battery compartment is granted once the closure is removed. After powering on the detector, you can adjust the sensitivity to optimize the vibration threshold by rotating the setting ring at the front of the handle. It is compatible with either a 9 Volt block battery (6LR61) or a NiMH rechargeable battery (6F22). A low battery voltage is indicated by vibration pulses at regular intervals.