Long range system
After settings the parameters and starting the process of detection: the device will start to send and receive special frequencies to detect the target type that you chose from the list.
When the device receives a signal, it will automatically track the signal toward the target, then it turns towards the target referred to by the sender and the receiver antenna of the signal.
After reaching above the target center, the device will wrap in a circular motion that means the device confirmed the target.
The depth of the device reaches up to 1200 meters under the ground.