Description of the key function: The main functions of the product: flashlight, sound, vibration (the intensity of the level can be adjusted), electric shock (the intensity of the level can be adjusted), support for a remote control that can link two receivers (A / B), distance actual wireless remote control is about 250 meters Theoretical distance 500 meters Three independent channel modes and key lock function: One channel (parameters can be set independently) Channel B (parameters can be set independently) Common channel A + B (parameters can be set independently) The key lock function is activated by long pressing for 3 seconds. Once the key lock function is activated, the remote control does not emit a signal and only the battery icon and the key lock icon. keys are displayed on the screen. The adjustable level of electric shock and vibration is from 0 to 99, and there is only one sound, no level Flashlight function Long press for 3 seconds to turn on the flashlight, short press
