Main chip: LM393,
Designed with reflected infrared sensor, indicator light.
made in a potentiometer for sensitivity control.
On-board LM393 voltage comparator chip and infrared sensing probe TCRT5000L
Support 5 V / 3.5 V voltage input
On-board signal output instructions, output is high effective signal at the same time, the indicator lamp light output signal can be directly and single-chip microcomputer IO connection ·
Signal detection sensitivity can adjust
Reserve all the way more circuits (P3 voltage drawn)
using TCRT5000 infrared reflection sensor
test reflection distance: 1 mm to 25 mm
Operation voltage: 3.5v-5V
Operation current: >15mA
wide voltage LM393 comparator
output form: digital switch output (0 and 1)
a fixed bolt hole, convenient installation.