Excelity 3 Sets PIR Body Motion Sensor HC-SR501 Module with Mounting Bracket

so now in this video we're gonna look at the HC SR 501 PIR sensor so P I R stands for passive infrared and so you can see right now the output is low according the oscilloscope and the LED went out when it senses motion the output goes high for three seconds and now we have to wait about five seconds before we do that again so I'll try to sneak in from behind there we go and so all we have to do to operate this first off is power so I'm going to use five volts I guess you can go up to 12 volts and I think 4.5 is the minimum so of course I always make sure you verify that before you use it but it's working just fine with five volts here the unit here so that power supply comes to these alligator clips there I clip number jumpers put the jumpers to the rail blue to blue that's the negative side of the power supply and then read the positive and then I have other jumpers bringing it to the