The LD-2 features two detection modes, a solid electrolyte gas sensor, and a patented UV dye detection system. It has a long life solid electrolyte sensor technology that is designed to detect the more difficult HFC refrigerants such as R134a and the new HFO refrigerant R1234yf. The instrument's unique digital leak size indicator takes the guesswork out of determining leak size. The digital display is independent from the audio alarm and sensitivity level, allowing the precise pinpointing of the leak source.


  • Patented 3 LED UV Light 395-415 nm wavelength for optimum air conditioning dye fluorescence US Patent 7,145,649
  • No UV enhancement eyeglasses needed
  • Unique digital alarm with numeric leak size indicator
  • Long life, stable sensor
  • Automatic calibration and reset to ambient levels
  • 3 adjustable sensitivity levels
  • True mechanical pump
  • Low battery indicator
  • SAE J2791 Certified, EN14624 Certified and CE Certified
  • Mute feature
  • Super durable, garage tough
  • Carrying case included
  • Visual LED leak alarm near sensor
  • Two year warranty on Detector, including sensor
  • Made in USA

LD-2 Dual Mode Refrigerant Gas Leak Detector

Model Number: LD-2 | Part Number: 026 80635 00

Product Specifications

Sensitivity .05 oz/yr R134a, .0123 oz/yr R1234yf

UV Mode 3 UV LEDs

UV Wavelength 395-415 nanometers

Electronic Sensor Life >10 years

Response Time Instantaneous

Power Supply 4 AA Alkaline batteries (included)

Battery Life 8 hours continuous

Warm-Up Time <20 seconds

Probe Length 17 inches

Weight 1.5 lbs

Warranty 2 Years (2 on sensor)

Numerical Display 7 segment digital display (1 to 9)

Alarm Near Sensor Visual probe LED

Product Flyer & Operation Manual

LD-2 Flyer [PDF; 217 KB]

LD-2 Operation Manual

Product Images


LD-2 Leak Detector


LD-2 Leak Detector Kit


Flourescent Dye


LD-2 Kit Batteries