... and accuracy choice the measure time, general measure time is 02s.4,General cases, nature dose rate and cumulative ... LCD, battery label full of three grids, the power is about 2.8V-3.2V, battery label full of two ... 8V, battery label full of one grid, the power is about 2.1 V-2.5V, battery label without ... full of grid , the power is under 2.1V, it is in the state of less power. 11,Working ...