How does the auto function work on my rear battery bike light H-Vision?

As soon as it is dark enough and the movement sensor senses movement, the light turns immediately on.

The Auto version of H-Vision has a light- and a movement sensor: When you push the switch button once the lamp goes in normal ON mode. When you push the switch button a second time the lamp goes in AUTO mode. A green blinking light indicates that the AUTO mode is activated. When you push the switch button a third time the lamp goes in OFF mode.

The AUTO mode function: First the light always turns on. If the environment is dark enough (less than ca. 10 lux) and the movement sensor senses movement, the light stays on. The light always stays on approximately 1 minute after the last sensed movement in darkness. When there is enough light in the environment (more than ca. 10 lux) or if the rear light doesn’t move, the light will turn off after approximately 1 minute. As soon as it is dark enough and the movement sensor senses movement, the light turns immediately on again.

Low-battery indicator indicates with constant green light when the light output has dropped to appr. 60% (after appr. 50 h). (total burn-time over 200h)