This is a rare Pyrotronics F3 Smoke Detector that uses 20 micro Curies of Radium 226 as an ionization source. This device has 5 radioactive sources in it. These radioactive sources are radium 226 foil, which are located on the cap center post and 4 strips inside the ionization chamber. The device has been checked to confirm the sources are installed in the device. The device hasen't been checked to see if it works as intended and is sold as is.
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