Geiger Counter - Radiation Detector Soeks Defender is made for measurement of the radiation background, detection of objects, food, building materials poisoned by radioactive elements. English menu/manual. Distinctive features of Soeks Defender (in comparison with Soeks-01M): measurement of cumulative dose up to 100 Sv, new rubber case, increased time of continuous work from batteries, sound indication of a threshold cumulative dose, rechargeable batteries and charger included in the kit. Compact and lightweight, TFT color display, USB-charging, Audible alarm, Numerical and graphical presentation. Radiation Detector Soeks Defender easily takes the gauge of the radioactivity according to the ion output power level (gamma radiation and beta particles stream) with regard to the x-ray radiation. As a result of measurement you will see the exact amount of indicated background radiation level in mcSv/h or mcR/h and a message about the radiation background: "Normal radiation background", "High radiation background", "Dangerous radiation background".