In 2014, a rotary type magnetic controlled flashlight was released, comprising a flashlight body, a magnetic sensing element, a rotary knob, a magnet, and a controller. The rotary knob can be pivotally installed on the flashlight body, and a magnet is installed on the rotary knob. The magnetic sensing element is installed at a position corresponding to the rotation path of the magnet inside the flashlight body, and the magnetic sensing element is electrically connected to the controller. Due to the use of a rotating structure, underwater workers can easily adjust the rotation and prevent the problem of frequent rotation causing wear and leakage of the waterproof ring at the tail of the lamp.
