i dound a small white flashlight and theres a button to turn on the light on top of the flashlight. then on the sides theres 3 settings: OFF- MR- and AL. when i turned to the setting AL (probably stands for ALARM), the flashlight started making an alarm noise. it was so loud. then when i turned to MR setting, nothing reall happened, a little buzzing noise coming from the flash light. does anyone know what the MR setting is??