ITEM NAME:Sensor Module Light Barrier PCB for Arduino - Black K6K8 Sensor Module Light Barrier PCB for Arduino - Black K6K8 Brand new and high quality Photointerrupters Sensor Module Power supply module Color: black Material: PCB Size: 2.5 x 1.5 x 0.5 cm Photointerrupter sensor module for Arduino Done in PCB material for recording digital signals. Suitable for Arduino DIY Profetto package content:1 x sensor module Note:Light shooting 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 +/- 1-3 cm..Photointerrupter sensor module for Arduino. Suitable for Arduino DIY Profetto. Material: PCB. Done in PCB material for recording digital signals. Photointerrupters Sensor Module.