Très bon dispositif, excellente sensibilité, cohérent, il peut être mesure de faibles sources de rayonnement. Bruit de particules fort et clair. La batterie dure quelques semaines avec une charge !!!

Very good device, excellent sensitivity, consistent, it can be measure low radiation sources. Particle sound loud and clear. Battery lasts couple of weeks with one charge!!!

Très bon dispositif, excellente sensibilité, cohérent, il peut être mesure de faibles sources de rayonnement. Bruit de particules fort et clair. La batterie dure quelques semaines avec une charge !!!

Probably one of the best cheap Geiger counters on the market right now. It uses J321βγ (M4011) Geiger–Müller tube - one of the best low cost G-M tubes out there. Thanks to J321 FS-5000 has probably as good β and γ radiation sensitivity as you can get for a low cost. The device has a sturdy plastic casing, clear display, a speaker for audio signaling of a radiation detection and vibration alerts as well. A simple PC application named ”Personal Radiation Dose Management System” for logging data is available on producers website - https://www.bosean.net/download which is a nice addition and makes that Geiger counter even more functional. I only regret that the device does not have a stand at the back, that would have enabled a more ergonomic viewing angle for the display when placed on a table Overall a quality product for a low price. Good job Bosean company and good job Banggood for a swift transaction and delivery.

Probably one of the best cheap Geiger counters on the market right now. It uses J321βγ (M4011) Geiger–Müller tube - one of the best low cost G-M tubes out there. Thanks to J321 FS-5000 has probably as good β and γ radiation sensitivity as you can get for a low cost. The device has a sturdy plastic casing, clear display, a speaker for audio signaling of a radiation detection and vibration alerts as well. A simple PC application named ”Personal Radiation Dose Management System” for logging data is available on producers website - https://www.bosean.net/download which is a nice addition and makes that Geiger counter even more functional. I only regret that the device does not have a stand at the back, that would have enabled a more ergonomic viewing angle for the display when placed on a table Overall a quality product for a low price. Good job Bosean company and good job Banggood for a swift transaction and delivery.

Probably one of the best cheap Geiger counters on the market right now. It uses J321βγ (M4011) Geiger–Müller tube - one of the best low cost G-M tubes out there. Thanks to J321 FS-5000 has probably as good β and γ radiation sensitivity as you can get for a low cost. The device has a sturdy plastic casing, clear display, a speaker for audio signaling of a radiation detection and vibration alerts as well. A simple PC application named ”Personal Radiation Dose Management System” for logging data is available on producers website - https://www.bosean.net/download which is a nice addition and makes that Geiger counter even more functional. I only regret that the device does not have a stand at the back, that would have enabled a more ergonomic viewing angle for the display when placed on a table Overall a quality product for a low price. Good job Bosean company and good job Banggood for a swift transaction and delivery.