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Low Power CRM with added CO capability


Dynamic Range 1-200 pCi/l
Units pCi/l or Bq/m³
Sensitivity 0.350 CPM per pCi/l
Linearity 1-200 pCi/l (<10%)< /td>
Temperature Range 50-104 ºF
Barometric Pressure Range 0-38 inHg
Relative Humidity Range 0-90%
Carbon Monoxide Range 0-200 ppm
Sampling Mode Passive Air Diffusion
Power Batteries / 1-year
Data Storage 79 Hours (3.3 Days)
External Output Serial RS-232C

AARST-NRPP Approved: CR-444

The femto-TECH, INC. model CRM-510LP/CO is a precision airborne alpha radiation detection instrument based on the same field proven pulsed ion chamber technology of previous models R210F and RS410F. Due to a unique patented electrometer and open grid probe design, the model CRM-510LP/CO is highly suited for a wide range of radon measurement applications. Because of the low current requirements of the electrometer detector and on-board computer, the model CRM-510LP/CO is truly a portable self-contained continuous radon monitor that can read and store test data for eight days of stand-alone operation. In this "passive" mode of operation the model CRM-510LP/CO is uniquely suited for screening and follow-up type testing.

The full function computer system incorporated in the model CRM-510LP/CO provides the operator with a highly flexible radon detection instrument and data logger operating system, while still maintaining the simplicity of operation for which femto-TECH instruments are noted. In addition to the measurement and storage of radon data, the highly sophisticated on-chip peripheral capabilities of the micro controller (MCU) used in the CRM-510LP/CO provide for the measurement and storage of temperature, barometric pressure, and relative humidity. This multidimensional data acquisition capability provides the tester with a unique data base for evaluating the validity of short term radon measurements.

Why measure carbon monoxide and radon?

The EPA lists radon as the number one environmental health risk homeowners may face. Next on the list of health risk concerns is carbon monoxide. While radon is a carcinogen, carbon monoxide is a poisonous gas which can cause harm very rapidly. During protocol radon tests, houses are placed under closed house conditions for a minimum of 48 hours enabling better detection data on varying levels of radon. If carbon monoxide is measured during the above conditions, chances of detection are likely to improve. If homeowners are concerned about the number one risk, they probably also have concerns about the second major health risk.


femto-TECH devices have been designed to meet the requirements of Professionals who need reliable measurements, but also need additional information to assist them in interpreting results.

Anti-Tamper Motion Detector


With the integrated tilt sensor, you can tell if any movement or tampering has been detected on the hour of it's detection.

Real-Time Radon Measurements

Observe the radon average/rate on the LCD screen while the test is being performed!

Fully responsive

Cutting Edge Sensitivity

The CRM-510LP/CO outperfoms every solid-state device on the market. It's like comparing a microscope to a magnifying glass.

Keyed Security Lock

A physical key is required to run/manage the CRM-510LP/CO, meaning the test cannot be stopped or tampered with while you are away.

Units of Measurement

Your choice!

Select between US & EU standards of measurement for radon, temperature, and barometric pressure.

Thermal Printer Support

Both wired and bluetooth

Directly connect to select Seiko printers, or use our mobile app to print via bluetooth to Star Micronics or Epson thermal printers.

Modern Report Generation


Use your preferred device platform to generate cohesive reports once your test is complete - at no added cost to you!

Add images to your report

Take a picture and add it to your report using our app, or simply add your choice of preexisting saved images.

Add signatures to your report

Use the mobile app to add a company & customer signature to your report.

CRM-510LP Device Training

This free online course includes everything regarding the usage of this CRM device.

Downloadable certificate proving completion of the course is issued upon passing a 20 question test with 75% or more.

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613 Case

Case for the CRM-510 model line

Government Affiliates

Industry Affiliates


Contact Us

25 Eagle Court,
Carlisle, OH 45005

Phone: (+937) 746-4427
Fax: (+937) 746-9134

Mon - Thurs | 8am - 4pm
Friday | 8am - 3pm