Module Features:
1,use imported groove coupler sensor
2,the groove width of 5mm.
3,output status indicator, the lamp output high, output low lights.
4, obscured output high; unobstructed output low.
5, the comparator output, the signal is clean, the waveform, driving ability, more than 15mA.
6, operating voltage?3.3V-5V
7, the output in the form: Digital switching outputs (0 and 1)
8, a fixed bolt hole for easy installation
9, small plates PCB Dimensions: 3.2cm x 1.4cm
10, using a wide voltage LM393 comparator

Package include:
1pc* Speed Measuring Sensor Module