Environmental Solutions Association offers a good course on Radon Measurement. Depending on your state requirements, they also have a correspondence course. I purchased a 1027 and it's simple to use for sure but of course knowing how to use the CRM is only part of offering this ancillary service. Being able to educate your client on Radon requires some form of education on your part. The one thing I don't like about the 1027 is the short battery life of 20 hours. If the power goes out for more than that you have to do the test over.

Anyone know of a battery backup for these CRM's?

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Principles don't change with circumstances. That's what makes them principles.
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