A camera’s shutter time in normal photography is given in seconds, but as a fraction. E.g. 1/200 = 0.005s = 5ms . The unit milliseconds “ms” is quite common for scientific devices.
Also remember, the Cubert Camera does not have a mechanical shutter, as it’s sensors can be read out all at once (“global shutter”). Still, in the end both values give the time during which light will illuminate the sensors.