Description

The ACR C-Strobe LED Emergency Strobe Light 3965.1 is a compact, manually activated personal distress strobe for life jackets, inflatable PFDs, backpacks, ditch bags, and marine safety kits. It uses a bright 45 lumen white LED in a waterproof, impact-resistant housing and provides long strobe runtime for low-light emergency location assistance.

Key Features

• ACR part number 3965.1 — C-Strobe, carded manual version
• Manual twist ON/OFF activation
• Manual activation only; this is not the water-activated H2O version
• 45 lumen white LED
• Light type: strobe
• Typical operating life of 120+ hours
• Minimum operating life of 100+ hours at -1°C
• Waterproof tested for 24 hours at 3.3 ft / 1 m
• Uses 2 AA batteries, sold separately
• Size: 5.06″ x 1.38″ x 1.2″ / 12.85 x 3.5 x 3.0 cm
• Weight: 1.2 oz / 33 g without batteries
• Reverse battery protection
• Includes PFD clip, lanyard, and Velcro strap
• Certifications include USCG/SOLAS, CE, and Transport Canada

Intended Use

The C-Strobe is intended for emergency visual distress signalling on life jackets, inflatable PFDs, vessel safety kits, ditch bags, backpacks, paddling gear, camping gear, and personal survival equipment. Its slim body and flexible mounting options make it useful for marine and outdoor emergency visibility.

Fitment Notice

This is the manual C-Strobe 3965.1. For applications that require automatic water activation, use the related C-Strobe H2O 3964.1 version instead. Always confirm the required approval standard for your vessel, operating area, and onboard safety-equipment list before replacing or adding emergency signalling equipment.

When This Product Needs Replacement

Replace the strobe if the housing is cracked, the twist switch becomes unreliable, the battery compartment shows corrosion, the light output is weak, the unit fails testing, or the light no longer meets required onboard safety standards. Batteries should be inspected regularly and replaced before expiry, seasonal launch, offshore trips, or long-term storage.

Installation Notes

Attach the C-Strobe to a compatible life jacket, inflatable PFD, backpack strap, or emergency kit using the included mounting accessories. The flexible lashing loops, PFD clip, lanyard, and Velcro strap provide several mounting options, including attachment to webbing or an inflatable life jacket’s oral inflation tube. Install fresh AA batteries and test operation before placing the strobe into service.

Alternate/Superseded Part Numbers

Related ACR C-Strobe references include:

• 3965.1 — C-Strobe, carded manual version
• 3965 — C-Strobe, bulk manual version
• 3964.1 — C-Strobe H2O, carded water-activated version
• 3964 — C-Strobe H2O, bulk water-activated version

Parts Desk Insight

The main detail to watch is activation style. 3965.1 is the manual twist-on C-Strobe, which is a good match when you want simple positive control. For life jacket setups where automatic activation on water contact is required, the H2O version is the better choice.

Shipping: Ships within 3 days for fast Canada wide shipping.