Feature: 1. TECHNICAL PARAMETERS: GC‑01 counter nuclear radiation detector, built in sensor, possess fast response time, high accuracy, gamma, beta and X ray detection. Cumulative dose equivalent 0.00uSv‑500.0mSv. Energy range 48KeV‑1.5MeV ≤±30%(for 137CS‑γ) 2. REAL TIME MONITORING: Nuclear radiation detector has powerful functions, multi function page real time detection, LCD display, interface data at a glance 3. HIGH SENSITIVITY: The nuclear radiation detector use high tech tubes, which greatly improve the sensitivity of the detection of radioactive radiation 4. 3 MODES: You can set the reminder functions of the nuclear radiation detector, support sound, flash, vibration three modes, you can choose according to your own habits 5. VARIOUS FEATURES: The counter also has a variety of other Settings, such as system clock settings and unit settings, and language changes, which you can operate in English(default) or Chinese for easy one hand operating Specification: Item Type: Nuclear Radiation Detector Model: GC-01 Dimension: Approx. 120 x 78 x 27mm / 4.72 x 3.07 x 1.06in Power Supply: 1 x Built in lithium ion battery 1100mAh Dose Rate: 0.00-10000μSv/h (10mSv/h) Energy Range: 48keV-1.5Mev ≤ ±30% (for 137Cs-) Measurement Units: μSv/h, μGy/h, mR/h, cps, cpm switchable Detectable Radiation Types: γ, x, β rays Detector: Energy compensated tube(technology tube) Language: Chinese and English switchable Detectable Scenarios: X ray or CT, tile or marble, industrial radiation, food or metal Color: Blue. Package List: 1 x Radiation Detector 1 x USB Cable 1 x User Manual