Underground Metal Scanner Professional Gold Silver Copper Detector Locator Item Type: Metal Detector Material: ABS Controller: Automatic Rotary Search Voice System: Visual and Auditory Search Range: 5-99 Meters Detection Depth: Approx. 1 x 15m / 3.3 x 49.2ft Detector: 12V Lithium Battery x 1, Battery Capacity: 1600mAh ( Shipped With Built In Battery ) Receiver: 12V Lithium Battery x 1, Battery Capacity: 1600mAh ( Shipped With Built In Battery ) Transmit Frequency: 5.6-6KHZ Signal Frequency: 400-470MHZ Charging Time: 10-12H Detection Depth: Maximum Detection Depth: Approx. 15m/49.2ft This instrument can detect at least 3.5 meters for a 5cmx5cm object. For a 30cmx30cm object, it can detect up to 5-8 meters, and if the object of this size has been buried for a long time, it can reach 12 meters. If the area of the object is larger, his detection depth will deepen. Function: It can accurately determine the buried position of the object and can locate it. It can also rely on the frequency regulator to identify the specific type of metal. How e: Choose a comfortable position on the floor and hold the instrument in your hands with your elbows firmly pressed against the sides of your body. Note: You must keep the instrument in front of your body so that the receiving antenna has enough room to spread out, and so that the antenna is tilted slightly downward from horizontal. The angle should be between 7 and 10 degrees. 1. Holding the instrument as described above, scan very slowly in an arc while turning yourself. At this time the detector elbow should always be close to the sides of the body, about turn 40 degrees to 60 degrees can be. Note: The detector must rotate slowly and keep the body steady. 2. Standardize your scanning motion. First, let the receiving antenna correctly after stretching out. Make the receiving antenna in front of you, and your body into a 90 degree spread, not to the left and right sides of the deflection. 3. When the antenna is aligned with the target, the instrument will lock on, even though you continue to detect across the target. When you feel that this lock is effective, you memorize the direction. Then, move the instrument about 10 meters to the left or right and repeat the process of locking on to the target as just described. Observe the locking direction this time, the intersection of the two directions is the buried position of the target. 4. If you feel that the specific position measured just now still has a certain offset, you can lock from another angle. If the target is within 10 meters, you will slowly and smoothly walk along one of the set routes. When you pass the target and are directly above it, the antenna of the instrument will swing both ways. The measured position will then be very accurate.