Product Feature: High precision--- This portable dose alarm adopts high sensitivity sensor (Geiger Counter) and advanced chip, it's suitable for detecting X-ray, -ray and Hard -ray. Current rate of dose: 0.00~100usv/h. Small & Easy to Operate--- 135 x 70 x 24 mm The nuclear radiation detector is and portable with three measurement units. Permanent data storage power cut off. LCD Screen The LCD screen of the nuclear radiation detector allows you to read the real-time values and quickly. Smart Protection--- Enter the alarm setting option to set the cumulative alarm value and the alarm value of the dosing speed. When the radiation value exceeds the set value, the nuclear radiation dosimeter emits an alarm automatically. Daily use of the nuclear radiation detector helps to avoid radiation risks in everyday life. Wide Application--- The digital radiation detector with a clear LCD screen and size, is widely used in radiation testing, irradiation processing enterprises, laboratories, geological surveys and etc, where ionizing radiation exists. Color: black Material: plastic Measurement Ranges: Dose equivalent rate: 0.01~100Sv/h Alarm : Dose rate: can be arbitrarily in increments of 0.05pSv/h within 100.0 Sv/h Working environment: Temperature -10C~+45C Relative humidity: 95%(+45C) Power: 2 x AA batteries (NOT INCLUDED) Package Contents: 1 x Nuclear Radiation Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.