AlphaGUARD is the state-of-the-art portable, battery- or net-operated radon monitor for precise and reliable professional use. Besides the radon concentration in air AlphaGUARD measures and records also simultaneously ambient temperature, relative humidity and atmospheric pressure with integrated sensors. There is a complete product family to cover all needs for the monitoring of radon in air, water, soil, building materials, radon progeny and thoron.