Enabling Sensors
To enable sensors for chrome, open given link (copy and paste) in chrome and makeGeneric Sensor Extra Classesto enable andGeneric Sensorfeature flag to enable motion sensors on the previous Chrome versions (before Chrome 67). Restart Chrome and you should be good to go.
Link 1:chrome://flags/#enable-generic-sensor-extra-classes -Click to Copy

Light Meter
A light meter is a device used to measure the amount of light.