The new TX-850 detector in allMetal DetectorIt is quite good. It also has high resolution for small gold nuggets. The control and functions are specifically designed for gold detection, including a cutting-edge ground balance system, signal capture numerical values and critical value separation design, and resolution control mode.

1. On/Off/Gain

1. Rotate to the right to open. Rotate to the left to close.

2. Turn the knob clockwise to increase the detector's sensitivity, and the deeper the detection depth will be.

3. Turn the knob, and the gain value will be displayed at the bottom right of the screen, indicating the current sensitivity setting.

4. Gain and Threshold, increasing the gain value or multiplying it will cause the underground metal objects to emit stronger signal intensity. In order to detect smaller or deeper metal objects to the greatest extent, the gain value should be increased; to hear weaker signals as much as possible, the gain value should be reduced.

5. Threshold controls the audio level of the detector. A positive threshold can amplify the sound of weak target signals, while a negative threshold can suppress sensitivity.

▲ Sensitivity under recognition mode: The rotary knob on the left (labeled 'Gain'), in the recognition mode, independently controls the detector's sensitivity.

Gain in Full Metal Mode: In full metal mode, rotate the knob clockwise to increase the gain value. The threshold is independently controlled by the button on the right.

Two, "/All Metal/Threshold

1. Press the button to the left to enter the identification mode.

2. Rotate clockwise to enter the full metal mode.

3. In the full metal mode, rotate the knob to increase the threshold value. The threshold range is from -40 to +40. In the full metal mode, the threshold control can be used in two aspects. When detecting with high sensitivity, first set a low level of gain. Then set the threshold to a positive number and tune it to a comfortable "hum". Then increase the gain to the appropriate level.

▲ For silent detection, set the threshold to a negative number and, if necessary, reduce the gain value. Silent detection can lead to some loss in sensitivity.

Automatic Ground Balancing/Positioning

This button has a dual function that depends on the detected mode.

1. In the recognition mode, hold and keep pressing the button to activate the positioning function. For the temporary motionless detection mode, any metal within the detection range of the detector will emit an alarm sound. The positioning function is generally used to confirm the metal object target previously detected in the recognition mode.

2. In the full metal mode, press and hold the button to activate the automatic ground balance function. The ground balance setting of the detector is set to match the area being searched.

3. In the recognition mode, '+ and -' changes the recognition level (target rejection)

In full metal mode, '+' and '-' provide manual ground balance settings.