COSOOS UV Leak Detector Kit for Automotive AC & Oil — Rechargeable 365nm Light, Safety Glasses & Carry Bag

The COSOOS Air Conditioner Leak Detector Kit is a rechargeable UV flashlight system with safety glasses and a carrying bag designed to find micro-leaks in automotive AC, oil lines, and refrigeration using 365nm fluorescence.

When refrigerant or oil dyes escape through tiny cracks or loose fittings, they can be nearly invisible in daylight. This compact COSOOS kit uses targeted ultraviolet light to make standard fluorescent dyes glow bright yellow, so you can quickly pinpoint leak sources, reduce wasted refrigerant and avoid extended downtime. The kit is built for technicians, DIY mechanics, and fleet owners who need a reliable, portable inspection tool that works across vehicle and HVAC systems.

How does the COSOOS detector reveal hidden leaks?

The detector emits a 365nm UV wavelength that excites common fluorescent dyes used in AC and oil systems, producing vivid yellow-green fluorescence at leak points. Its focused beam and compact head let you inspect seams, hose fittings, and evaporator cores where leaks tend to hide.

• 365nm UV for bright, high-contrast fluorescence
• Ergonomic shape reaches confined engine bay and HVAC spaces
• Protective glasses enhance visibility by filtering stray light
• Ideal for dye-based detection in refrigerant, oil, and coolant systems

What comes in the kit and how easy is it to use?

The COSOOS kit arrives ready to work: a rechargeable UV flashlight, safety glasses, USB charging cable, and a durable carrying bag for neat storage. It’s plug-and-play—charge the built-in battery, add the appropriate fluorescent dye to the system you’re inspecting, then scan the area with the light in a dim environment for best results.

• Complete set: detector, glasses, USB cable, storage bag
• Recharge via car charger, power bank, or wall adapter
• Lightweight for handheld, prolonged inspections
• Ready-to-store bag protects components between uses

Which systems and dyes are compatible with the COSOOS Leak Detector?

This detector is compatible with standard fluorescent UV dyes used across automotive AC, engine oil, and industrial refrigeration systems. The tool’s universal response to these dyes makes it suitable for multi-vehicle shops, field service, and home garages—one device covers many applications.

• Automotive AC refrigerant systems
• Engine oil and lubricant line inspections
• Household and commercial refrigeration units
• Works with common dye formulations (check dye manufacturer guidance)

How long does the battery last and how is it maintained?

The built-in rechargeable battery is designed for repeated inspections without the waste and cost of disposables. Recharging is simple with the included USB cable; use standard USB power sources for quick top-ups between jobs.

• Rechargeable battery eliminates constant battery replacement
• USB charging supports car chargers, power banks, and wall adapters
• Store in the provided bag to protect the lens and electronics
• Follow common battery care: avoid prolonged storage fully discharged

Who is this for? The COSOOS Air Conditioner Leak Detector Kit is aimed at automotive technicians, HVAC service professionals, fleet maintenance teams, and confident DIYers who need an accurate, portable way to find dye-marked leaks. If you regularly work on AC systems, cooling circuits, or oil lines and want a reusable, rechargeable tool that fits in a toolbox or glove compartment, this kit provides a practical inspection solution with protective eyewear and convenient storage.