HC-020K Speed Measuring Module With Speed Encoder Kit

Feature:
HC-020K is a high resolution, short response speed, wide voltage switch output speed
measuring module, with black encoder can measure motor speed (Now provide the
encoder type D, hole diameter is 4 mm. Can be used to output shaft is 4 mm motor).CityTech BD 
Description:
Working voltage: 4.5V to 5.5 V.
Transmit tube pressure drop: Vf = 1.6 V
Transmit tube current: 20 mA
Signal output: A, B two way; The TTL level
Distinguish precision: 0.01 mm
Measurement frequency, 100 KHZ
Encoder diameter: 24 mm
Encoder type D hole diameter: 4 mm
The encoder resolution: 20 line
Package Included:
1 x Encoders
1 x module
1 x cables CityTech BD