Adjustable PIR Motion Detector - HC-SR501

HC SR501 PIR motion sensor also called Pyroelectric, Passive infrared or IR motion sensor. As shown in above image these are small approximately 1.2 x 0.9 inch sized printed circuit board with the PIR motion sensor mounted on the front side and covered by a white fresnel lens that increases the performance of the lens and at the same time protect it. The backside of the PCB is the circuitry with chip and all the components require for processing the information received from the sensor.

HC SR501 Module Features & Technical Details

• Wide operating voltage range from 4.8V to 20V
• Low power consumption in idle mode only 50uA and 65mA in fully active mode.
• High reliability
• Adjustable sensitivity or detection distance
• Adjustable output time delay (Adjust how much time the output will remain high after the sensor detects a signal)
• Can be used separately without any additional microcontroller or platform like Arduino or Raspberry Pi etc. But you can use them to enhance your project.
• Light sensing control feature (Optional)
• Temperature sensing control feature (Optional)
• Low cost
• Using BISS0001 high quality PIR processing chip
• 120 degree detection angle
• 3 to 7 meters or more detection range
• Easy to communicate with any platform like Arduino or Raspberry Pi etc. and also with all microcontrollers.
• Easy to communicate with analog circuits