The poCAMon personal online continuous air monitor combines a very compact design with a high flow rate and long battery life. The unit measures long living aerosols as well as short living Radon daughters by alpha spectroscopy and beta counting. A bright alpha numeric display and the clear keypad allow the operation even under harsh conditions. The integrated powerful charger recharges the unit within two hours. There are sensor options for Carbone monoxide and combustible gases as needed in underground mines.