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MDE-2000NC Marksman™ II

Features advanced heterodyne circuitry and “Sound Signature Technology” to convert and amplify inaudible ultrasonic sound into audible “natural” sounds. Provides quick diagnosis and detection of problems before they lead to major breakdowns!


  • Quickly detects compressed air, natural gas, propane tank, vacuum, steam, refrigerant and other pressurized leaks quickly and effortlessly
  • 5-LED signal intensity indicator and audible alarm easily pinpoint the exact problem source
  • Finds gear and bearing wear in internal components and electric motors
  • Internal Noise Control (INC) ensures that tool is unaffected by ambient noise, making it ideal for use in extremely noisy environments
  • Self-adjusting Automatic Gain Control (AGC) circuitry enhances sensitivity and simplifies operation
  • Unique ultrasonic emitter helps locate faulty seals, gaskets and weather stripping in doors, windows, ductwork and other non-pressurized enclosures
  • Precision-engineered hollow air probe helps isolate leak sources in cramped areas
  • Adjustable touch-control sensitivity pad and power switch


Kit includes ultrasonic receiver, ultrasonic emitter, hollow air probe, contact probe, noise-cancelling headphones, (2) D cell batteries and rugged carrying case.



Sensitivity: Detects leaks from orifices as small as 0.004 in (0.1 mm) at 5.0 psi (34 kPa), from distance of 12 in (30 cm)
Weight (with batteries): 1.5 lb (680 g)
Housing: Chemical-resistant ABS
Battery life: 165 hours (approx.)
Power requirements: Two “D” cell alkaline batteries (included)
Frequency response: 36,000 - 44,000 Hz
Circuitry: Solid state
Headphones: Full-size, noise-cancelling headphones
Industrial Brochure.pdf (418 KB)




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