the rotary encoder is used to measure the speed and with pwm technology can achieve rapid speed devices with fixed bolt hole for easy installation great for diy project
specification:
model: ky 040 working voltage: 5v material: pcba plus brass weight: 10g size: 32 x 19 x 30mm
package included:
1 x ky 040 rotary decoder module
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sold by mmm999
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