Geiger Counter for Ionizing Radiation.

Detects Alpha, Beta, Gamma, and X-ray radiation (depending on GM tube type)

Digital LCD display showing CPM, µSv/h or mR/h (depending on model)

Audible “click” signal for each particle detected

Compact and lightweight for handheld use

Alarm threshold settings for high radiation levels

Battery-powered (typically AA, AAA, or rechargeable Li-ion)

Data logging and USB interface (on advanced models)