ZLLJYBLG HVAC Refrigerant Leak Detector — Handheld with Flexible Probe & UV Light, High-Sensitivity, Fast Warmup

The ZLLJYBLG HVAC Refrigerant Leak Detector is a handheld, high-sensitivity instrument that finds halogen refrigerant leaks quickly with audible, visual, and UV-assisted alerts.

This compact leak finder combines a semiconductor sensor with a flexible probe, LCD readout, and UV illumination to help technicians and homeowners locate even small refrigerant leaks across HVAC, refrigeration, and automotive A/C systems. It supports a wide range of halogen refrigerants and is designed for fast warmup, easy controls, and dependable performance in interference-prone environments.

How quickly can I start using the leak detector on site?

The ZLLJYBLG unit is ready for action after a short 30-second automatic warmup and switches between Celsius and Fahrenheit with a single button. Its simple button layout (SEL, APO, ℃/℉, Power) and ergonomic handheld form make it practical for rapid checks during service calls or DIY inspections.

• 30-second automatic warmup for fast deployment
• One-button ℃/℉ toggle and intuitive controls
• Compact, ergonomic design for handheld use
• Runs on 2 AAA batteries (included) for immediate operation

What refrigerants and sensitivity levels does it detect?

This detector uses a heat dioxide semiconductor sensor engineered to detect a broad range of halogen refrigerants, including R134a, R1234yf, R410a, R22, R404a, R407c, R454b, R32 and others. It reaches a maximum sensitivity of approximately 0.49 oz/year (14 g/year) and can identify leaks when the probe is within about 0.25 inches (0.63 cm) of the source.

• Detects common halogen refrigerants and many additional models
• Maximum sensitivity ~0.49 oz/year (14 g/year)
• Probe detection distance ≤0.25 inches (0.63 cm)
• Optimal probe movement speed ≤3 inches/s (75 mm/s) for best results

How does the detector help pinpoint leaks in difficult areas?

A flexible probe and high-sensitivity sensor let you reach tight or hidden service ports, piping joints, and evaporator coils. The device gives audible and visual alerts plus a high-brightness LCD that shows concentration, battery level, and alarm status, while the built-in UV light helps visualize trace dye or make suspicious areas easier to inspect.

• Flexible probe for hard-to-reach locations
• Audible and visual alerts for immediate feedback
• Backlit LCD displays concentration and battery info
• UV illumination assists in locating dye-marked leaks

What convenience and durability features are included?

The leak detector includes anti-interference technology for stable readings in complex environments, auto-power-off to preserve battery life, and reset calibration capability for routine maintenance. It ships with batteries and a user manual, so technicians and homeowners can begin inspections without extra accessories.

• Strong anti-interference design for accurate readings
• Auto-power-off and reset calibration functions
• Includes 2 x AAA batteries and user manual
• Portable, handheld form factor for field use

Who is this for: The ZLLJYBLG HVAC Refrigerant Leak Detector is suited for HVAC technicians, refrigeration service professionals, automotive A/C repairers, and informed homeowners who need a portable, sensitive tool for locating halogen refrigerant leaks. It’s especially useful when small leaks or hidden joints are suspected and when a quick, reliable diagnostic tool is required on service calls or maintenance rounds.