Laser technology uses the principle of flight time. The sensor sends a light pulse in a specific direction and measures how long the signal takes to go back. Since the speed of light is a constant value, the time is directly proportional to the distance between the sensor and the first object encountered by the light pulse . By sending multiple light pulses in multiple directions the TOF sensor is able to know the exact position of any object in its detection area.
The TOF sensor - especially in the version with 3G / 4G connectivity - is particularly suitable in very low light conditions and for temporary installations (for example Fairs, Events, Events).