SENSYX Rechargeable HVAC Leak Detector — Refrigerant & Combustible Gas, Color LCD, Japan Sensor

The SENSYX Rechargeable HVAC Leak Detector is a portable, high-sensitivity tool for locating refrigerant and combustible gas leaks quickly, with an easy-to-read color LCD and adjustable sensitivity.

Built for HVAC technicians and maintenance pros, this compact detector combines a Japan-made heat dioxide semiconductor sensor, USB-C rechargeable battery, and a clear color display to help you find leaks across a wide range of halogen refrigerants and, on the SFD201 model, common combustible gases. It meets UL1484 testing standards and includes US-based customer support for setup and troubleshooting.

How accurate is the SENSYX detector at finding small leaks?

The detector uses a highly sensitive Japan-manufactured semiconductor sensor tuned for fast response to trace refrigerant concentrations. You can switch between high and low sensitivity levels to reduce false alarms in noisy environments or to pinpoint very small leaks during close inspection.

• Japan-made heat dioxide semiconductor sensor for rapid detection
• Adjustable High/Low sensitivity settings for flexible response
• Visual level readout on the large color LCD to track leak strength
• Suitable for micro-leak troubleshooting and routine inspections

Which refrigerants and gases can this unit detect?

SENSYX detectors identify a broad set of halogen refrigerants used in HVAC systems, including many CFCs, HFCs, HCFCs and HFO blends. The SFD201 model also covers common combustible gases such as methane, ethane, propane and isobutane, making it useful for both refrigeration and mixed-service environments.

• Compatible refrigerants: R11, R12, R22, R134a, R404a, R410a, R1234yf, R452b, R507 and many more
• SFD201 adds combustible gas detection: methane, ethane, propane, isobutane
• Versatile across service work on residential and commercial systems
• Designed for modern HFO/HFC blends as well as legacy refrigerants

How does the rechargeable battery and display improve field work?

The built-in rechargeable lithium battery and included USB-C cable remove the need for disposable cells, letting you work untethered for extended periods. The large color LCD displays real-time levels and simplifies leak location, while the quiet operation helps you concentrate on pinpointing the source.

• USB-C rechargeable lithium battery for cordless operation and portability
• Included cable for convenient charging from common power sources
• Large, bright color LCD gives clear leak level feedback at a glance
• Low operational noise supports focused inspection in tight spaces

What safety and support features come with the detector?

The SENSYX detector is tested to the UL1484 safety standard and carries a warning about prolonged exposure to certain refrigerants. US-based customer service and technical support are available to help with setup, calibration tips and operational questions.

• UL1484-tested for safety and reliability in professional settings
• Prominent safety warning about refrigerant exposure risks
• US-based customer service and technical support for fast assistance
• Recommended best practices included to reduce exposure and hazards

Who is this for? HVAC service technicians, refrigeration specialists, and facilities maintenance teams who need a reliable, portable detector for routine leak checks, system commissioning, and troubleshooting. If you work with a variety of refrigerants or need the additional capability to detect combustible gases, the SENSYX detector offers flexible sensitivity settings, long run time from a rechargeable battery, and a clear visual display to speed diagnosis and minimize downtime.