This speed measuring sensor is a wide voltage, high resolution, short response time, and the switch output speed measurement module. It can test the motor's rotational speed with a black encoder (measured spec. is related to the encoder, the inner diameter of D type encoder provided is 4mm, and can be used for the motor output shaft w/a 4mm diameter, which is TT motor we matched, yellow shell and white axis)

Specifications :

• Product - Speed Measuring Module With Speed Encoder Kit 
• Model No - HC-020K
• Operating Voltage - 4.5-5V DC
• Encoder Type - D hole Diameter 4mm
• Frequency - 100KHz

Package Include :

1 x Double-speed measuring module encoder photoelectric pulse output module