Waltec® RD200 Radon Monitor - RadonEye Set, USB Cable, German Instructions, Radon Measurement Tips, Mobile Phone App, Certificate, Radon Eye - The Professional Device for your home.

Detects radon changes much faster than Airthings sensors. It can detect rising radon within 10 minutes and can be used to look for radon ingress points. (Airthings sensors update every hour but provide an average of readings in a 24h period) However, this requires to be plugged into power and isn't battery-powered. Both the app and connection via Bluetooth to Raspberry Pi work well.Be prepared to pay import duty plus fees if importing into the UK.

Quick, accurate and easy to use and move to any locationNo mention of import duty on purchase

I bought this at the same time as another radon detector(that I'll mention below). The RD200 looked good on the specification. It had a LED display readout, good reviews online.First snag, import duty. I was hit with a £47 charge to pay prior to delivery in the UK. Another Brexit Divident eh!. So by the time that was added, I was in for £222. Paying the £47 meant Id be stuck accepting the product as i'd lose that charge if I returned the product. The customs charge is not something that is clear on Amazon adverts that ship products from EU, although I can't blame the seller for that.I had just bought the Ecosense EQ100. That requires a live internet connection. One advantage of the RD200 is that it can be left in a room, and doesn't require internet connection. So ideal if you want to survey the radon levels in a house you are buying. However, the big negative is that there isn't built in clock, so when accessing the data, there is no display of the actual time/day of point readings. Only the graphical trend is show and a datapoint number. That's a real shame in my opinion.Actual readings of Radon are very similar to the EQ100, so that gives me confidence that both units are working ok.If the time/day issue could be remedied in the app, Id be more than happy to recommend this to others. The fact that it does have the LED readout is a big plus over the EQ100 which relies on agreen/amber/red display

Does the job, but be aware you will be hit with another £50 import duty if you order this in the UK, and the price is already high...