1. Remote Dual Pressure Switch Can Simultaneously Control Flashlight Laser Pointer. 3 Buttons Are Respectively Control The Lights Connected By The 2 Plugs, Both Are Momentary Modes, Only Lights Up When Pressed. 2. SF Plug Is Applied To M300/M600 Series Scout Troch Lights And Flashlights And The 2.5/3.5mm Plug Is Suitable For PEQ15 Etc. The Three Buttons Remote Pressure Switch With 2 Plugs To Meet More Usage Needs During Activities 3. It Can Be Directly Snapped Onto The 20mm Rail And M/K Dual System. TPU Plastic Material, Reinforced Polymer Construction And AntiAging, WearResistant And . And Safe Performance In Using. Life , Don't Worry About Getting Wet Or Raining, But Please Don't Soak The Product Directly In Water. 4. When Install on M/K System, You Need to Remove the Mounting Bases on Both Sides of the Switch First Then Use the Included Screws and Nuts to Install It to the System. ,DirectMounting the Remote Pressure Switch to 20mm Rail.