VL53L0X Time of Flight sensors 940 nm. The Time of Flight Sensor is a module that accurately measures how long it takes for infrared light pulses to reach the obstacle and reflected back to the detector. The TOF sensor uses an I2C interface to send data to the microcontroller. Range of +/- 3% in best case to over +/- 10% under less optimal conditions. Fast response time: 50ms Colour: purple + black Material: plastic + metal Size: 25 x 12.2mm Package Contents: 5 set x Ranging Sensor Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.