RD300: Refrigerant Leak Detector


  • Detects all standard refrigerants using a heated diode sensor
  • LED light at probe tip (with on/off switch) for working in dimly lit areas
  • LEDs display user-selectable High/Medium/Low levels with sensitivity of 0.25/0.50/0.99 oz per year
  • Audible and Visual alert with mute button
  • Low battery indicator
  • Field replaceable sensor and LED light tip
  • Complete with leak test bottle, 9V battery, and protective hard carrying case
  • English Datasheet
  • English User’s Manual

Available on back-order

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Detect Leaks from Air-Conditioning Units and Cooling Systems

The RD300 Refrigerant Leak Detector detects leakages from air-conditioning units and cooling systems. It’s easy to use and is ideal for detecting leaks from air-conditioning units and cooling systems that use all standard refrigerants. The multi-colored LED light bar indicates the level of leaking refrigerant detected by the RD300. The built-in, bright LED convenience light located at the sensor tip illuminates dimly lit inspection areas. Complete with leak test bottle, 9V battery, and protective hard carrying case.

Specifications Range
Detectable Refrigerants R‐22, R‐134a, R‐404a, R‐410a, and all CFCs, HCFCs and HFCs
Sensor Heated Diode
 Sensitivity Levels High 0.25oz/yr (7g/yr)
Medium 0.5oz/yr (14g/yr)
Low 0.99oz/yr (28g/yr)
Warm up Time 90 seconds
Auto Power OFF Automatic shut off after 10 minutes
Low Battery Indication LOW‐BATT light switches ON
Power Supply 9V Battery
Battery Life 13 hours of continuous use
Operating Conditions 0°C to 50°C (32°F to 122°F) <80%RH
Storage Conditions ‐10°C to 60°C (14°F to 140°F) <70%RH
Flexible Probe Length 450mm (18″)
Dimensions 184 x 70 x 40 mm (7.2″ x 2.8″ x 1.6 ″)
Weight 280g (10.0 oz.)