Nuclear radiation is a problem that each one needs to pay attention to, because it may bring some serious consequences, such as disease or even cancer. Our nuclear radiation detector can help you to detect nuclear radiation well, so if you need it, come and try it. Features: Using the LCD display, the working status of the nuclear radiation instrument is clear on the display, and you can quickly and accurately read the data you need. With the function of automatically storing cumulative dose, even if the power is suddenly cut off, the data will not be lost and can be stored for a long time. There are three alarm methods: sound, light and vibration, which can better remind you and give you a better experience. Hand-held portable design, easy to carry and store, you can put it in your pocket for carrying. NR-850 has five measurement units: uSv/h, uGy/h, mR/h, cps, cpm, and this type uses a higher specification of geiger tube, product accuracy and stability has a big improvement. Specifications: Material: plastics Detecting rays: X, Y, Dose current rate: 0.00~1000usv/h (10msv/h) Accumulated dose equivalent: 0.00uSv~500.0mSv Energy ranges: 48keV~1.5Mev≤±30% (for 137Cs-) Language: English, Chinese Sentivity: 80CPM/uSv (for Co-60) Power: 2 * AA battery (NOT INCLUDED) Item weight: 120g / 4.2ounce Package size: 172 * 126 * 36mm / 6.8 * 5.0 * 1.4in Package weight: 200g / 7.1ounce Note: The time and date displayed on the screen are used to record and mark the measurement time, not the real time. The time and date are reset when the power is turned on and off. Packing list: 1 * Nuclear Radiation Detector