Motion PIR Sensor HC-SR501


This sensor detects motion using Infra Red.

10 in stock

SKU: 0028 Category: Tags: , , ,


PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range. They are small, inexpensive, low-power, easy to use and don’t wear out. For that reason they are commonly found in appliances and gadgets used in homes or businesses. They are often referred to as PIR, “Passive Infrared”, “Pyroelectric”, or “IR motion” sensors.

PIR sensors are used to detect motion from pets/humanoids from about 20 feet away. This one has an adjustable delay before firing (approx 2-4 seconds) and adjustable sensitivity. Runs on 5V-12V power (if you need to run it off of 3V you can do that by bypassing the regulator, but that means doing a bit of soldering). Digital signal output is 3.3V high/low. Sensing range is about 7 meters (120 degree cone)


  • Working Voltage Range    : DC 4.5V- 20V
  • Current drain    :<60uA
  • Voltage Output: High/Low level signal : 3.3V TTL output
  • Detection distance : 3–5M
  • Detection range:  <140°
  • Delay time: 5-200S (can be adjusted, default 5s +-3%)
  • Blockade time: 2.5 S (default)
  • Trigger: L: Non-repeatable trigger  H: Repeat Trigger (default)
  • Work temperature:-20-+80°C
  • Trigger Method: L unrepeatable trigger / H repeatable trigger


BISS0001 Decoder Datasheet

NL11NH Lens Datasheet

RE200B – Sensing Element Datasheet

Tutorial at


Wiring Diagram

Video Tutorial



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