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Safety Siren Radon Gas Monitor & Alarm (Pro3) Pro Series 3

Model #: HS71512

UPC: 0758773715125

Condition: New

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Upgraded BY MANUFACTURER to Pro Series 4. Link for New Pro Series 4

The following links, images and information remain available for informational purposes only.

Made in the U.S.A. Meets EPA Performance Criteria of the CR protocol. Our electronic radon gas detector and monitor is a proven performer being in service since 1996. Used by inspectors, consultants and homeowners to monitor the radon gas levels in schools, offices and residences. It is a solid state continuous radon monitor which utilizes patented technology. At the heart of the device is a measurement circuit and pulse processing software which records alpha events on a photovoltaic sensor. Radon daughters create a spark when they come in contact with the potential across the collection dome and the photovoltaic sensor counts these pulses. The software equates pulse volume into pCi/L (Pico Curies per Liter) and then displays the information on the LED display. Follow this link for more technical info (will open in new window).

  • No wiring or batteries needed; uses typical 110v household current.
  • Entela Certified
  • Results will display in approx 48 hrs on a numeric digital LED display
  • Shows the level of radon gas in pCi/L on a short-term or long-term basis
  • 2 modes of measurement - long and short term
  • Alarm sounds:
    • Long-term measurement reaches 4 pCi/L or greater (can be silenced)
    • Short-term measurement stays above 4 pCi/L for 30 consecutive days
  • Samples air continuously; display updated every hour.
  • Self-test every 24 hours with an error code displayed if failure.
  • 10' power cord supplied
  • Menu button controls 4 functions. Re-set unit and use in different locations.
  • UL61010B-1:2003 Issued: 1/24/03 Ed: 1 Standard for Safety Electrical Measuring and Testing Equipment; Part 1: General requirements
  • CSA C22.2 NO 1010.1-92 - Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 1: General requirements.
  • 10 year sensor.


  • Power source input: 120 VAC / 60Hz at 6.5 Watts
  • Power source output: 18 VDC / 200mA
  • Sensor: Ionization Chamber
  • Sensor voltage: 250VDC
  • Full scale reading: 0.1 to 999.9 pCi/L
  • Operating temperature: 32° to 104° F (0° to 40° C)
  • Storage temperature: -4° to 185° F (-20° to 85° C).
  • Audible Alarm: 85dB at 10cm.
  • Beeps every hour if:
    • long-term readings are 4 pCi/L or greater or
    • short-term measurement stays above 4 pCi/L for 30 consecutive days.
  • Averaging frequency: Levels will be updated on the display every hour.
  • Short-Term: Average over the past 7 days.
  • Long-Term: Average from the time of last reset (5 year max) resets after 5 years.
  • Accuracy: less than 12 percent deviation in pCi/L.
  • Dimensions: 4.7 x 3.1 x 2.1 inches.

Supplied with:

  • Pro III Radon Gas Detector.
  • Owners manual.
  • Tips on locating detector.
  • 1 year limited manufacturers warranty.
  • Power adapter with 10 foot power cord (18vDC)

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