Fenix AER-04 Tactical Remote Switch: Mounting and Use Guide

Quick answer

Mount the Fenix AER-04 by attaching the pressure pad where your support hand naturally rests, routing the cable clear of moving parts, and securing it with the included cable ties or hook-and-loop backer. Test both momentary and constant-on functions before live use.

Step-by-step installation and use

1. Step 1: Confirm compatibility: Check that your flashlight has a compatible tail cap or switch port for the AER-04. Consult your light's manual if unsure. Do not force the connector—it should seat firmly without excessive pressure. A compatible light is essential; the AER-04 will not function with lights lacking a remote switch interface.
2. Step 2: Position the pressure pad: Place the pressure pad on your rail or handguard where your support hand naturally rests. Avoid placing it where it might be accidentally activated during handling. Temporarily hold it in place and test your grip before securing. Prioritize a natural, reachable position over aesthetics; you should be able to activate the pad without adjusting your grip.
3. Step 3: Route the cable: Run the cable along the rail or handguard, keeping it clear of moving parts, heat sources, and the trigger area. Use the included cable ties or hook-and-loop backer to secure it at intervals. Leave a small service loop near the light and switch to avoid strain. Avoid sharp bends or tight zip ties that could damage the cable; a little slack prevents connector stress.
4. Step 4: Secure the pad and switch: Attach the pressure pad using the hook-and-loop backer or cable ties. If using hook-and-loop, clean the surface with alcohol first for better adhesion. Ensure the tactical switch is also accessible and secured. Test the hold by gently tugging the pad and cable; if either shifts, reinforce with additional ties or a dedicated mount.
5. Step 5: Test functionality: Activate the pressure pad to confirm momentary on at the brightest level. Press the tactical switch to verify constant on. Check that the cable does not interfere with the light's operation or your firearm's controls. Perform this test in a safe, unloaded environment; repeat after any adjustments.
6. Step 6: Final check and maintenance: After installation, verify that the switch is securely mounted and the cable is protected. Periodically inspect the cable for wear and the pad for secure adhesion, especially after heavy use or exposure to moisture. Re-check cable ties and hook-and-loop adhesion after the first range session; vibration can loosen them.

Product facts

• Fenix AER-04 Tactical Remote Switch: The Fenix AER-04 tactical remote switch allows quick selection of momentary on at the brightest level via the pressure pad or constant on via the tactical switch. This dual-function design lets you choose between temporary illumination for target identification and sustained light for navigation or signaling.

  

• Fenix AER-04 Tactical Remote Switch: The switch is IP68 rated dustproof and waterproof underwater to 2 meters. This rating ensures reliable operation in rain, dust, or brief submersion, making it suitable for outdoor and tactical environments.
• Fenix AER-04 Tactical Remote Switch: It attaches easily with cable ties or the included hook-and-loop backer. You get flexible mounting options without needing specialized tools, though the hook-and-loop backer may not hold as securely under heavy recoil.