10pcs TCRT5000 Infrared Reflective Sensor IR Photoelectric Switch Barrier Line Obstacle Avoidance Module Tracing Sensor Tracing Module for Arduino Smart Car Robot auspowers_batchfour User Friendly and Everything Included-

User Friendly and Everything Included- Start taking measurements moments after unboxing

unbreakable and good quality frame

BOX Heavy Dark Yellow is linear switches

Vofler 6 Pack Cooling Towel (40"x 12") is the answer

10pcs TCRT5000 Infrared Reflective Sensor IR Photoelectric Switch Barrier Line Obstacle Avoidance Module Tracing Sensor Tracing Module for Arduino Smart Car Robot auspowers_batchfour User Friendly and Everything Included-10pcs TCRT5000 Infrared Reflective Sensor IR Photoelectric Switch Barrier Line Obstacle Avoidance Module Tracing Sensor Tracing Module for Arduino Smart Car Robot Product Features Using infrared reflective sensor TCRT5000 TCRT5000 infrared reflection sensor, detecting reflection distance, suitable for 1mm~25mm, comparator output, clean signal, good waveform, strong driving ability, over 15mA, with potentiometer adjustment sensitivity IR Infrared