SENSYX HVAC Refrigerant Leak Detector SFD201 — Rechargeable USB-C, High-Sensitivity Color LCD

The SENSYX HVAC Refrigerant Leak Detector is a rechargeable, high-sensitivity halogen and freon sniffer designed to quickly locate refrigerant and select combustible gas leaks with a large color LCD for clear readouts.

This compact, cordless leak detector combines a Japanese heat-dioxide semiconductor sensor with adjustable sensitivity and a vivid display to make finding HVAC leaks faster and less guesswork. USB-C charging keeps the unit ready on the job, and the detector supports a wide range of halogen refrigerants plus additional combustible gases on the SFD201 model. Built to accepted safety standards and backed by U.S.-based support, it’s intended as a practical tool for service technicians and maintenance teams.

How sensitive is the sensor and what refrigerants can it detect?

The device uses a high-quality Japanese semiconductor sensor engineered for strong sensitivity to halogen-based refrigerants. Sensitivity can be toggled between high and low to suit different inspection needs, reducing false alarms in noisy environments. The detector covers many CFCs, HCFCs, HFCs and HFOs, so it works across older and newer HVAC systems.

• Japanese-made heat-dioxide semiconductor sensor for reliable detection
• High/Low sensitivity switch to adapt to leak size and background concentration
• Detects common refrigerants including R12, R22, R134a, R410a, R1234yf and many others

What else can the SENSYX detect and are there different models?

Both SFD200 and SFD201 detect a broad list of halogen refrigerants; the SFD201 expands detection to certain combustible gases too. That model can sense light hydrocarbons such as methane, ethane, propane and isobutane, useful for technicians working with blended refrigerants or systems that may contain flammable charges. Choose the model that matches your service requirements and local codes.

• SFD200: focused on halogen refrigerants
• SFD201: includes HC/combustible gas detection (methane, propane, isobutane, etc.)
• Works across CFC, HCFC, HFC and HFO families for broad application

How does the rechargeable design and display improve field work?

The built-in rechargeable lithium battery eliminates dependence on disposable cells and supports extended use between charges. A USB-C cable is included for convenient charging from laptops or power banks. The large, color LCD presents leak level information visually and audibly, helping you pinpoint leaks with less strain and in quieter settings.

• Rechargeable lithium battery with USB-C charging for cordless mobility
• Vibrant large color LCD shows leak intensity and supports precise location
• Quiet operation mode and clear visual cues reduce user fatigue on long jobs

Is the tool safe and is customer support available?

The detector has been tested to meet recognized safety standards for refrigerant detection equipment, and SENSYX offers U.S.-based customer service and technical support for setup and troubleshooting. Always follow refrigerant safety guidance: avoid prolonged exposure and use appropriate ventilation and personal protective practices when working near gas leaks.

• Meets UL1484 safety testing standards for added reliability
• U.S.-based customer service and technical assistance available
• Includes a clear safety warning about prolonged refrigerant exposure

Who is this for: The SENSYX HVAC Refrigerant Leak Detector is aimed at HVAC service technicians, facilities maintenance teams, refrigeration specialists and contractors who need a portable, accurate solution for locating refrigerant leaks across a variety of system types. Choose the SFD201 version if you require additional detection of light hydrocarbons; otherwise the SFD200 covers a broad roster of halogen refrigerants for routine diagnostics and repair work.