MD-890 New Waterproof Underwater Metal Detector - Pulse Pinpointer Induction, Diving Treasure Hand Held Metal Finder

Description This product is fully waterproof up to 5 meters into water, can recognize metals, is rechargeable with lithium batteries, and can be folded. 1. Power supply: 1 (B1) 9V battery, with a continuous usage time of more than 8 hours. 2. Visual Hand Probe: 2.1 Visual inspection: LCD display screen 2.2 Sound: Buzzer 2.3 Vibration: Motor 3 . function 3.1 Two working modes: The detector has two working modes: A-M and DISC. Users can select the working mode by pressing the function selection key "M". 3.1.1 A-M mode: The working mode is set to A-M, with the range indicated as all metals. Various samples are taken at a height of 5-10cm above the center of the probe and move back and forth at a constant speed. The target indication of LCD will change in display position according to the quality of the sample, and the display pattern will basically match the quality of the sample. There will also be a depth indication on the lower side of the LCD, and different tested samples will emit three different sounds. 3.1.2 DISC method: The working mode is set to DISC. Short press the function selection key "M" to adjust the type of metal detection. Metal that has been removed cannot be detected, while metal that has not been removed can be detected normally. 3.2 Environmental detection function: After turning on the handheld probe, you can press and hold the function selection key "M" as needed to eliminate interference from the current environment and ensure detection stability and accuracy 3.3 Lighting Control: Short press the power button to select whether to turn on or off the LED lights on the detection panel according to the usage scenario. 4 Working frequency: 5.8 ± 0.5KHz 5 Working current: When metal is not detected, the working current should be less than 30mA. When metal is detected and the horn sounds, the current should be less than 50mA. When the LED light is on, the increased current should be less than 10mA. 6 Minimum operating voltage: When the working voltage is 7V, the detector works normally. 7 Low voltage test indication: When the battery voltage is below 6.8V, the battery level indicator on the LCD screen is 0 bars. 8 Detection sensitivity: The working mode is set to A-M, take a 25 cent coin, and move it back and forth at a constant speed at a height of 10cm above the center of the probe. The LCD screen should have corresponding indications, and the target should basically point to the 25 cent pattern. The buzzer emits high notes while the motor vibrates.