Pyroelectric Infrared Sensor HC-SR501 for $ 0.67

Motion Sensor (PIR Motion Sensor) HC-SR501
for UPD $ 0.67
I did not find cheaper, and in vain, it was found =)
Such modules have been reviewed at us several times, and after reviewing we found it, decide whether you need this module or not.
And I decided to have a little fun with him

Go to the store