Dosimetro Geiger contatore radiometro con 1 pz tubo Geiger SBM-20 nuova scatola facile da usare
(Simple in use, just 1 button, turn on\off. Very easy in use, just one button)) on\ of and you know if you are in safe. 1 set of batteries is enough for 300 hours of work. i supose for couple years enough in normal use.