Strobe, MS-2000 (M2), Waterbug

Military-Spec Water Activated Strobe/SOS/Steady-On Marker Light

LSI Product ID: sig-3991-02

AID Model: 3991.2

Like our highly regarded, reliable SDU-5E and MS-2000 (M), the MS-2000 (M2) is designed to meet or exceed military specifications, including MIL-L-38217D and CID A-A-59176, and it has many improved life saving features to meet multiple mission capability.


  • Meets the most up-to-date requirements of the military and fit virtually any application
  • Attached infrared (IR) filter for Night Vision Goggle (NVG) viewing with felt liner to prevent overt light leakage
  • State of the art LED technology
  • New vibration feature alerts you of activation and mode changes covertly when using the IR shield
  • Raised polarity indicators allow correct battery placement even when visibility is low or dark
  • Directional blue filter alerts friendly forces, distinguishes strobe from ground fire
  • Silicone conformal coating on electronic componenets protect against moisture
  • New braided steel retainer keeps battery cover attached
  • Up to 56 hours of operation on 2 standard alkaline AA batteries (use lithium batteries for extreme cold environments or long term storage)
  • Water activation sensors automatically activates light when armed
  • 4 Activation Modes to choose from: Armed, Strobe, SOS or Steady-On