US Patent 11475756 Position locator

A position locator with a shell with a first resonant chamber, a second resonant chamber, a buzzer element, a main board and a power supply. The first resonant chamber is located above the second resonant chamber located below, the buzzer element separates the first resonant chamber and the second resonant chamber, the main board is connected to the buzzer element for controlling the position locator power on and off, the power supply is connected to the main board for supplying power to the main board.