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5pcs HC-SR501 PIR Infrared Motion Sensor Human Body IR Movement Detector Sensor Module for Arduino for Raspberry Pi

4.4 4.4 out of 5 stars 334 ratings

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Purchase options and add-ons

Brand Stemedu
Color White, Yellow, Green
Power Source Electric
Item Weight 60 Grams
Maximum Range 21 Feet

About this item

  • HC-SR501 Delay Time: 0.5-200S (adjustable), the range is (0.xx second to tens of second), the delay time can be adjusted by using the potentiometer on the HC-SR501 motion sensor.
  • Operating voltage range: DC 4.5-20V; Quiescent Current: <50uA; Trigger: L can not be repeated trigger/H can be repeated trigger (Default repeated trigger)
  • Automatically and quickly turn on home devices by detected HC-SR501 motion sensor.
  • HC-SR501 motion sensor is an economic hightech products. It is widely used.
  • Angle Sensor: <100 ° cone angle Lens size

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Product Description

HC-SR501 Human Body Pyroelectricity Infrared PIR Motion Detector Sensor Module

HC-SR501 PIR Motion Sensor

Human Body Pyroelectricity Infrared PIR Motion Detector Sensor Module

  • Operating voltage range: DC 4.5-20V
  • Quiescent Current: <50uA
  • Trigger: L can not be repeated trigger/H can be repeated trigger (Default repeated trigger)
  • It has pin header to select trigger mode
  • Delay time: 0.5-200S (adjustable) the range is (0.xx second to tens of second)
  • Block time: 2.5S (default)
  • Can be made a range (0.xx to tens of seconds)
  • Board Dimensions: 32mm*24mm
  • Angle Sensor: <100 ° cone angle Lens size
  • HC-SR501 Sensor Diameter: 23mm(Default)

Usage

This PIR motion sensor can automatically and quickly open various types of incandescent, fluorescent lamps, buzzer, automatic doors, electric fans, automatic washing machine and dryer Machines and other devices, it is a high tech products.

  • Especially suitable for enterprises, hotels, shopping malls, warehouses and family aisles, corridors and other sensitive Sense of region, or for the security zone automatic lighting, lighting and alarm systems.
  • Also, it can work with Arduino or Raspberry Pi projects.
  • You can use these sensors to connect lamps at home as well.

Package Included:

  • 5 X Stemedu HC-SR501 PIR Infrared Motion Sensor
HC-SR501 Pir Infrared IR Sensor  Body Motion Module for Arduino

Adjustable Delay Time

  • With induction blocking time (default setting: 3-4 seconds): After each induction output (high level to low level), the induction module can set a blocking time immediately, and sense in this time period The device does not receive any induction signal.
  • This function can realize the interval work (induction output time and blocking time), and can be applied to interval detection products; at the same time, this function can effectively suppress various interferences generated during load switching.

HC-SR501 Pir Infrared IR Sensor Body Motion Module for Arduino

Features

  • 1. Fully automatic induction: When someone enters its sensing range, input high level, and when people leave the sensing range, it will automatically delay and turn off high level. Output low level.
  • 2. Photosensitive control (optional): The module has a reserved position, which can be set for photosensitive control, and does not sense during the day or when the light is strong. Photosensitive control is an optional function, and no photoresistor is installed at the factory. If necessary, please purchase the photoresistor separately and install it yourself.
  • 3. Two trigger modes: L can not be repeated, H can be repeated. It can be selected by jumper, the default is H.
  • A. Non-repeatable trigger mode: After the high level is sensed, the output will automatically change from high to low as soon as the delay time ends.
  • B. Repeatable trigger mode: After the induction output is high, during the delay time, if there is a human body moving within its sensing range, its output will remain high until the person leaves. The delay will be high. The level changes to a low level (the sensing module will automatically extend a delay time period after detecting each activity of the human body, and the time of the last activity is the starting point of the delay time).
  • 4. Micro power consumption: 65 microamps of quiescent current, especially suitable for electrical products powered by dry batteries.

HC-SR501 PIR Motion Sensor and Arduino connection

Instructions for use

  • 1. After the induction module is powered on, there is an initialization time of about one minute, during which time the module will output 0-3 times at intervals, and enter the standby state after one minute.
  • 2. Try to avoid interference sources such as lights directly on the lens on the surface of the module, so as to avoid introducing interference signals and causing misoperation; try to avoid the use environment The wind will not flow, and the wind will also cause interference to the sensor.
  • 3. The sensing module adopts a dual-element probe. The window of the probe is rectangular. The dual elements (A-element and B-element) are located at both ends of the longer direction. When the human body walks from left to right or from right to left, the infrared spectrum reaches the dual element. There is a difference in the time and distance of the sensor. The larger the difference, the more sensitive the sensor. When the human body walks toward the probe from the front or from top to bottom or from bottom to top, the dual element cannot detect the change in the infrared spectrum distance, no difference Therefore, the sensor is not sensitive or does not work; therefore, when installing the sensor, the direction of the dual element of the probe should be as parallel as possible to the direction where the human body moves the most, so as to ensure that the human body is sensed by the dual element of the probe when it passes by. In order to increase the sensing angle range, this module uses a round lens, which also makes the probe sense on all sides, but the left and right sides are still larger than the upper and lower directions, and the sensitivity is stronger. The installation must still follow the above requirements as much as possible.

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Stemedu 5pcs HC-SR501 PIR Infrared Motion Sensor Human Body IR Movement Detector Sensor Module for Arduino for Raspberry Pi
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Delivery
Get it as soon as Monday, Feb 17
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Get it as soon as Monday, Feb 17
Get it as soon as Monday, Feb 17
Get it as soon as Monday, Feb 17
Customer Ratings
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Customer reviews

4.4 out of 5 stars
334 global ratings

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Customers say

Customers find the motion detector easy to use and set up. It has good sensitivity and works well for detecting motion. However, some customers have mixed opinions on its functionality.

AI-generated from the text of customer reviews

4 customers mention "Motion detection capability"4 positive0 negative

Customers like the motion detection capability. They say it works well for detecting motion, is a good simple PIR sensor, and has sensitivity that is very good. The sensors are easy to use and work well.

"...Their sensitivity is very good. I have yet to try adding a thermistor to the HC-SR501 to test its night time capabilities...." Read more

"Motion detection works well enough. I was attempting to use this to directly activate a 3V relay and struggled to get the relay to activate...." Read more

"Easy to use and works well" Read more

"Cool little pir sensors...." Read more

3 customers mention "Ease of use"3 positive0 negative

Customers find the motion detector easy to use and set up. The pins fit well into female Dupont wires for prototyping.

"...Worked just fine the first three days I had it connected. Easy to set up. Pins fit well into female Dupont wires for prototyping." Read more

"Worked pretty good, easy to hook up too" Read more

"Easy to use and works well" Read more

19 customers mention "Functionality"13 positive6 negative

Customers have mixed opinions about the motion detector's functionality. Some say it works well for being cheap and easy to hook up, while others report issues like it stops working after a short period of use, is unreliable, and has intermittent performance.

"...They work w/o issue, and will continue their use...." Read more

"So here's the thing, they work great; if they work at all...." Read more

"As per the HC-SR501 data sheet, stops detecting ("detection range is shorter") as temperature approaches 30 degrees celsius..." Read more

"I used one of these for my Pi based Magic Mirror project and it works well. Build quality seems good and I’ve had no problems so far!" Read more

Halloween animatronics
5 out of 5 stars
Halloween animatronics
After a couple of decades, I decided to build some new life size figures using some of the latest sensors, relays, and motors. I'm using the HC-SR501 sensors to initiate the animatronics, and found a couple of issues. They work w/o issue, and will continue their use. I also wanted to incorporate a flame bulb that will go in the medieval torch I built out of PVC pipe/fittings, EVA foam, and modelling paste.Regardless of the input voltage, the HC-SR501 output trigger voltage is only 3.3V-3.4V DC. This means I can only use 5V DC opto-relays, instead of 12V opto-relays as their trigger voltage is >4.5V DC. This required making a 5V circuit to power the HC-SR501 and the relays. The video shows the DC-DC Buck converters (blue LEDs) and the 5V DC opto-relays (red LEDs) driving the HC-SR501, one motor, and the flame bulb. The simplified schematic shows the wiring layout I made with applied voltages.The second issue to note with the HC-SR501 is the delay pot. It only takes a 10 degree turn of the pot to go from the minimum delay time of one second to 25 seconds.Their sensitivity is very good. I have yet to try adding a thermistor to the HC-SR501 to test its night time capabilities.FYI: I'm using the B0CMXCZX9Y nylon standoffs (via Amazon) to mount all of these boards.UPDATE: I'm holding back from installing a thermistor. Low light sensitivity is excellent.
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Top reviews from the United States

  • Reviewed in the United States on January 4, 2024
    The media could not be loaded.
    After a couple of decades, I decided to build some new life size figures using some of the latest sensors, relays, and motors. I'm using the HC-SR501 sensors to initiate the animatronics, and found a couple of issues. They work w/o issue, and will continue their use. I also wanted to incorporate a flame bulb that will go in the medieval torch I built out of PVC pipe/fittings, EVA foam, and modelling paste.

    Regardless of the input voltage, the HC-SR501 output trigger voltage is only 3.3V-3.4V DC. This means I can only use 5V DC opto-relays, instead of 12V opto-relays as their trigger voltage is >4.5V DC. This required making a 5V circuit to power the HC-SR501 and the relays. The video shows the DC-DC Buck converters (blue LEDs) and the 5V DC opto-relays (red LEDs) driving the HC-SR501, one motor, and the flame bulb. The simplified schematic shows the wiring layout I made with applied voltages.

    The second issue to note with the HC-SR501 is the delay pot. It only takes a 10 degree turn of the pot to go from the minimum delay time of one second to 25 seconds.

    Their sensitivity is very good. I have yet to try adding a thermistor to the HC-SR501 to test its night time capabilities.

    FYI: I'm using the B0CMXCZX9Y nylon standoffs (via Amazon) to mount all of these boards.

    UPDATE: I'm holding back from installing a thermistor. Low light sensitivity is excellent.
    Customer image
    5.0 out of 5 stars
    Halloween animatronics

    Reviewed in the United States on January 4, 2024
    After a couple of decades, I decided to build some new life size figures using some of the latest sensors, relays, and motors. I'm using the HC-SR501 sensors to initiate the animatronics, and found a couple of issues. They work w/o issue, and will continue their use. I also wanted to incorporate a flame bulb that will go in the medieval torch I built out of PVC pipe/fittings, EVA foam, and modelling paste.

    Regardless of the input voltage, the HC-SR501 output trigger voltage is only 3.3V-3.4V DC. This means I can only use 5V DC opto-relays, instead of 12V opto-relays as their trigger voltage is >4.5V DC. This required making a 5V circuit to power the HC-SR501 and the relays. The video shows the DC-DC Buck converters (blue LEDs) and the 5V DC opto-relays (red LEDs) driving the HC-SR501, one motor, and the flame bulb. The simplified schematic shows the wiring layout I made with applied voltages.

    The second issue to note with the HC-SR501 is the delay pot. It only takes a 10 degree turn of the pot to go from the minimum delay time of one second to 25 seconds.

    Their sensitivity is very good. I have yet to try adding a thermistor to the HC-SR501 to test its night time capabilities.

    FYI: I'm using the B0CMXCZX9Y nylon standoffs (via Amazon) to mount all of these boards.

    UPDATE: I'm holding back from installing a thermistor. Low light sensitivity is excellent.
    Images in this review
    Customer image
    One person found this helpful
    Report
  • Reviewed in the United States on July 28, 2020
    As per the HC-SR501 data sheet, stops detecting ("detection range is shorter") as temperature approaches 30 degrees celsius (approximately 90 degrees fahrenheit). These units have the through-holes to add a thermistor to improve high temperature performance, if one has a thermistor to add.

    The real test is if starts detecting again when the temperature drops. I plan to drop my score one star for each unit that permanently fails on me.

    Worked just fine the first three days I had it connected. Easy to set up. Pins fit well into female Dupont wires for prototyping.
    8 people found this helpful
    Report
  • Reviewed in the United States on September 5, 2024
    works as intended
  • Reviewed in the United States on November 16, 2024
    Bien
  • Reviewed in the United States on December 6, 2023
    So my fiancé had the idea to have a Shrek themed party and I thought it would be a great idea to have a speaker yelling at people 'WHAT ARE YOU DOING IN MY SWAMP'. So I bought these PIR sensors and hooked them up to my Pi 3 and programmed it to play a sound on detection. These are very sensitive so I recommend hiding them so they can only sense one direction.
    One person found this helpful
    Report
  • Reviewed in the United States on April 7, 2022
    Hooked up to 5V supply, output toggled from high to low as the description says, tweaked the pots on it to play with it, they work also. Now to figure out what the heck I want to use these with, I bought them for Halloween stuff.
    One person found this helpful
    Report
  • Reviewed in the United States on September 16, 2019
    Verified PurchaseEarly Reviewer Rewards(What's this?)
    I used one of these PIRs to activate a DC switching circuit, that I also got on Amazon, in order to control a linear actuator for a Halloween decoration. I used this PIR because it has adjustable timing.
    3 people found this helpful
    Report
  • Reviewed in the United States on November 21, 2019
    So here's the thing, they work great; if they work at all. 3/5 of the sensors I received always either failed to detect any movement or constantly registered everything as movement. I decided to give it the benefit of the doubt and try and remove any possible interference and no dice. It wasn't until I tried my 4th sensor that things magically started working, and to be honest, I don't even know if the 5th one works as I'm too afraid to mess up my current setup.
    12 people found this helpful
    Report

Top reviews from other countries

Translate all reviews to English
  • Amazon Customer
    5.0 out of 5 stars Guess they are okay
    Reviewed in Canada on December 23, 2023
    I haven't used them yet sorry
  • Kindleのお客様
    5.0 out of 5 stars 発送も早く安くて良い買い物ができました。
    Reviewed in Japan on June 11, 2024
    類似製品が多く迷ったのですが、価格もお手頃だったので購入しました。
    商品到着後、早速使ってみましたが問題なく動作しました。

    商品到着も早く、梱包も1個ずつ個包装されており、信頼できると思います。
    また利用させて頂きます。
  • Greg C.
    5.0 out of 5 stars Did exactly what they were supposed to do
    Reviewed in Australia on September 14, 2020
    These sensors did exactly what they were supposed to do. they were easy to hook up to an Arduino and use in a sketch.
  • MG Bear
    5.0 out of 5 stars Excellent product
    Reviewed in Canada on April 23, 2020
    When I received the product I immediately connected the PIR. The output was 3.5 volts regardless of the input power. I assumed this was a defect in the product. NOT THE CASE. The product works great and the setting are very good. You can set up the output to stay on for 5 sec to 5 minutes. In my case, that is exactly what I needed
  • Raymond F.
    1.0 out of 5 stars Random false alarms
    Reviewed in Canada on February 7, 2023
    The sensor does not work as it supposed to. It gives random false alarms.