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HiLetgo 5pcs HC-SR501 Human Sensor Module Pyroelectric Infrared PIR Motion Detector Modules

3.6 out of 5 stars 1,089 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.

Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 4 x 4 x 4 cm; 10 g
  • Date First Available ‏ : ‎ 16 May 2012
  • Manufacturer ‏ : ‎ Super9shop
  • ASIN ‏ : ‎ B007XQRKD4
  • Item model number ‏ : ‎ 3-01-0120-A
  • Guaranteed software updates until ‏ : ‎ unknown
  • Customer reviews:
    3.6 out of 5 stars 1,089 ratings

Customer reviews

3.6 out of 5 stars
1,089 global ratings

Customers say

Customers find the motion detector works well as a human movement sensor, with good build quality and value for money. They appreciate its ease of use, with one customer noting it's simple to hook up with electronic circuits, and another mentioning it's ideal for LED lights driven by lithium cells. The sensitivity receives mixed feedback, with one customer finding it tricky to adjust.

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FunctionalityQualityValue for moneyEase of useBuild qualityUseMotion detectionSensitivity
27 customers mention ‘Functionality’22 positive5 negative

Customers find that the motion detector works well, with one customer noting its good detection accuracy and responsiveness.

"...one worked intermittently and finally the third one worked and works well.....cheap crud." Read more

"Works well" Read more

"Works fine with my Arduino, as others have said look on the web for documentation, there's lots of it around...." Read more

"These PIRs are functional, but because they don't do any signal processing within the sensor, they can be subject to RF interference, which may..." Read more

17 customers mention ‘Quality’16 positive1 negative

Customers find the motion detector to be of good quality, with one customer noting it performs better than the Akuru brand.

"Great device, well built, as described...." Read more

"a good sensor ...i have got it set up in my car ..." Read more

"Great Product!" Read more

"This is a very neat little module, built on a good quality PCB, and works better than I expected...." Read more

12 customers mention ‘Value for money’11 positive1 negative

Customers find the motion detector to be good value for money, with one customer noting it works better than expected for the price.

"Good value...." Read more

"...These are cheap enough to mess about with even without knowing their final purpose. Definitely a fun building block...." Read more

"...However, these are minor drawbacks; the module is good value for money, and works well if used correctly." Read more

"Great value. Sent quickly." Read more

7 customers mention ‘Ease of use’6 positive1 negative

Customers find the motion detector simple to use, with one mentioning it's easy to hook up with electronic circuits.

"...Easy to use and they do the job perfectly." Read more

"Such a great item. Very easy to wire up and it worked so easily...." Read more

"...Two trimmer pots set sensitivity and response. Very simple to put into use !" Read more

"These are very easy to get started with as there are only 3 connections. All the complexity is hidden. They work well as a human movement sensor...." Read more

6 customers mention ‘Build quality’6 positive0 negative

Customers appreciate the build quality of the motion detector.

"Great device, well built, as described...." Read more

"...a padded envelope, the item is exactly how it was described, very nice build quality...." Read more

"This is a very neat little module, built on a good quality PCB, and works better than I expected...." Read more

"Well built module. plenty of sketches available on Arduino web site" Read more

6 customers mention ‘Use’5 positive1 negative

Customers find the motion detector useful, with one mentioning it's ideal for LED lights powered by a lithium cell.

"...are perfect for fitting to something discreet, ideal for LED lights driven by a lithium cell, saves wasting power when the room is empty...." Read more

"Useful little sensor..." Read more

"Very useful, very cheap PIR sensor that is easy to hook up with your electronic circuits..." Read more

"Useful item..." Read more

4 customers mention ‘Motion detection’4 positive0 negative

Customers are satisfied with the motion detection capabilities of the sensor module, with one customer noting its ability to detect human body motion and another mentioning its passive infrared technology.

"...At its maximum sensitivity setting, the module will detect human body motion even beyond its specified 7 metre range, provided that the motion is..." Read more

"...connections to TTL or lower voltage supply, with one line changing when sensing movement. Two trimmer pots set sensitivity and response...." Read more

"Passive infrared movement sensors...." Read more

"Vary goid..." Read more

6 customers mention ‘Sensitivity’3 positive3 negative

Customers have mixed opinions about the motion detector's sensitivity.

"Good sensitivity and stable in use." Read more

"...The only down side is the distance and sensitivity is not the great, but for a cheap item, it works better than expected for the price." Read more

"The module has 2 sensitivity pots. One has to be very precise when turning the screws to achieve desired results...." Read more

"...Detection range is greatly reduced when moving directly towards or away from the sensor...." Read more

OK for the price but some issues
3 out of 5 stars
OK for the price but some issues
OK, but the links for triggering modes are just solder pads not pre-fitted links. Therefore it isn't as user friendly as other suppliers as it needs my soldering iron and magnifying glass once I figure out which way to link it. (Need to find cct diagram as well on the internet as there's nothing in the packet
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Top reviews from United Kingdom

  • SolarMan
    5.0 out of 5 stars Passive infrared movement sensors.
    Reviewed in the United Kingdom on 16 October 2015
    Verified Purchase
    These are very easy to get started with as there are only 3 connections. All the complexity is hidden. They work well as a human movement sensor. I just need to decide what that killer project will be. These are cheap enough to mess about with even without knowing their final purpose. Definitely a fun building block. An idea might be to power down a microprocessor LED display if no one is looking it it.
    There seems to be some misprints on the quiescent power supply current. I think the units should be ~65 micro not milli amps.
    3 people found this helpful
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  • Alex
    1.0 out of 5 stars very bad never works it says 12v but gives only 3v waste of money
    Reviewed in the United Kingdom on 7 January 2019
    Verified Purchase
    very bad never works it says 12v but gives only 3v waste of money
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  • Woolly
    4.0 out of 5 stars Emgreat PIR Sensor HC-SR501
    Reviewed in the United Kingdom on 24 May 2014
    Verified Purchase
    This is a very neat little module, built on a good quality PCB, and works better than I expected. I did a web search for "HC-SR501 pir datasheet" and found some helpful information about using this device. At its maximum sensitivity setting, the module will detect human body motion even beyond its specified 7 metre range, provided that the motion is ACROSS the sensor's field of view. Detection range is greatly reduced when moving directly towards or away from the sensor. The data sheet that I found on the web explained the reasons for this. In my opinion, mounting the module could be a little tricky; two M2 mounting holes are provided on the PCB, but thread-stock below M3 tends to need a specialist supplier, and although M3 pillars are commonly available, I have yet to find any M2 pillars. The clearance between the mounting holes and the PCB conductors is very small, so care will be needed when incorporating this module into a housing. However, these are minor drawbacks; the module is good value for money, and works well if used correctly.
    24 people found this helpful
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  • Sunny Lincs
    5.0 out of 5 stars Useful little sensor
    Reviewed in the United Kingdom on 15 January 2019
    Verified Purchase
    Now they have arrived I can review them.
    Built and tested first part of an alarm system using these IR sensors, happy with
    the result. they worked as expected triggering with no problems. Now to build and
    test the rest of the system. Item as described and fully working to spec. Happy customer.
    One person found this helpful
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  • Ben
    3.0 out of 5 stars Good for some projects, but not mine
    Reviewed in the United Kingdom on 3 September 2018
    Verified Purchase
    These PIRs are functional, but because they don't do any signal processing within the sensor, they can be subject to RF interference, which may result in false positives. Because of this, they were unsuitable for my purposes and I had to search for an alternative, which led me to another type of PIR with the signal processing done within the sensor. If you're having the same problem, Google "AM312 PIR" for a solution. It works straight out of the box.
    2 people found this helpful
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  • Michael D
    5.0 out of 5 stars Very useful, very cheap PIR sensor that is easy to hook up with your electronic circuits
    Reviewed in the United Kingdom on 14 May 2017
    Verified Purchase
    This is the PIR sensor I mentioned in my review of the Toogoo Sound Module. I have several uses for a PIR sensor, one of which is to provide an alert signal if a hot plate (e.g. cooker, iron etc) is left unattended for more than a minute to two. This took ages to arrive from China, but it did finally arrive and within a few minutes I tested it on a breadboard to ensure that it worked. Ridiculously low price, which for schools projects would be totally budget-friendly.
    Helpful
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  • Amazon Customer
    2.0 out of 5 stars Not very good
    Reviewed in the United Kingdom on 13 August 2018
    Verified Purchase
    Good when work but the first one did not work at all....second one worked intermittently and finally the third one worked and works well.....cheap crud.
    Helpful
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  • Shiv R B
    5.0 out of 5 stars Better than Akuru brand!
    Reviewed in the United Kingdom on 1 June 2016
    Verified Purchase
    Having purchased some of the Akuru, HC-SR501 sensors. These are the best quality! I have since purchased another 2 x from this seller.
    These have two 105 potentiometers, which are clearly labelled "Sx" and "Tx", for sensitivity and for retriggering time.
    The sensors are pre-made to re-trigger at a HIGH signal while motion is detected.
    You can easily change this with some solder and a jumper lead.
    I assure you, these are the sensors to purchase if your looking for quality. They take a little longer to arrive from China, but they are better than the Akuru ones offered in the Prime service which had bent capacitors on all 3 units.
    Send a message if you need help to get it up and running with Arduino.

    Leave a vote if you found this helpful :)
    4 people found this helpful
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Top reviews from other countries

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  • Praveen kumar
    5.0 out of 5 stars good product
    Reviewed in India on 21 September 2023
    Verified Purchase
    but the there is no precise or dezire output
    Report
  • alain boissy
    5.0 out of 5 stars parfait
    Reviewed in France on 20 August 2020
    Verified Purchase
    parfait plus que dans mes attentes, petit, montage sur un raspberry pi pour faire une alarme au top
    Report
  • tlatino
    5.0 out of 5 stars As advertised - good little sensor
    Reviewed in the United States on 20 December 2013
    Verified Purchase
    This sensor has been a workhorse for the electronics industry, and this one is a great price. Please be aware that there are no instructions or pin outs, but there are literally hundreds of sites that have tutorials and code snippets to help you get started. it is really not very complicated. Used this on a project to detect wildlife getting into the garden and scaring them off. It is durable ( bought these before) and small enough to not be noticed. Range is nice on it too.
    Report
  • Adrián
    5.0 out of 5 stars Buena calidad
    Reviewed in Spain on 10 October 2018
    Verified Purchase
    Me llegaron en el día que se indicaba y van bien protegidos en una caja y además en sobres de plástico antiestático.
    Aunque no llevan instrucciones o serigrafiado qué pin es cada uno o qué hace cada porenciometro, una búsqueda rápida por google te soluciona el problema.

    Por el momento he podido probar solo uno de los cinco que vienen en la caja, pero a falta de hacer alguna que otra prueba más parece que funcionan bastante bien.
    Customer image
    Adrián
    5.0 out of 5 stars
    Buena calidad

    Reviewed in Spain on 10 October 2018
    Me llegaron en el día que se indicaba y van bien protegidos en una caja y además en sobres de plástico antiestático.
    Aunque no llevan instrucciones o serigrafiado qué pin es cada uno o qué hace cada porenciometro, una búsqueda rápida por google te soluciona el problema.

    Por el momento he podido probar solo uno de los cinco que vienen en la caja, pero a falta de hacer alguna que otra prueba más parece que funcionan bastante bien.
    Images in this review
    Customer image
    Report
  • Marco
    5.0 out of 5 stars Sempre utili
    Reviewed in Italy on 6 October 2019
    Verified Purchase
    Il prodotto arriva ben protetto, impacchettati ad uno ad uno dentro una busta antistatica e spediti dentro un contenitore di cartone.
    Non ci sono bisogno di tante spiegazioni per questo sensore, facile da usare e con tanto supporto in rete.
    Si presta a tante applicazioni,specialmente nell'ambito della domotica. Spesso capita infatti di dover controllare il passaggio di una persona o un animale domestico, e un sensore PIR e' probabilmente il modo piu' facile ed economico di implementarlo. Averne 5 a disposizione permette di coprire piu' stanze e/o piu' angolature.
    Sicuramente consigliato!

    The product arrives well protected, packed one by one in an antistatic bag and shipped in a cardboard box. There is no need for a lot of explanation for this sensor, which is easy to use and has a lot of support on the net. It lends itself to many applications, especially in the field of home automation. It often happens in fact to have to control the passage of a person or a pet, and a PIR sensor is probably the easiest and cheapest way to implement it. Having 5 available allows you to cover more rooms and / or more angles.
    Definitely recommended!
    Customer image
    Marco
    5.0 out of 5 stars
    Sempre utili

    Reviewed in Italy on 6 October 2019
    Il prodotto arriva ben protetto, impacchettati ad uno ad uno dentro una busta antistatica e spediti dentro un contenitore di cartone.
    Non ci sono bisogno di tante spiegazioni per questo sensore, facile da usare e con tanto supporto in rete.
    Si presta a tante applicazioni,specialmente nell'ambito della domotica. Spesso capita infatti di dover controllare il passaggio di una persona o un animale domestico, e un sensore PIR e' probabilmente il modo piu' facile ed economico di implementarlo. Averne 5 a disposizione permette di coprire piu' stanze e/o piu' angolature.
    Sicuramente consigliato!

    The product arrives well protected, packed one by one in an antistatic bag and shipped in a cardboard box. There is no need for a lot of explanation for this sensor, which is easy to use and has a lot of support on the net. It lends itself to many applications, especially in the field of home automation. It often happens in fact to have to control the passage of a person or a pet, and a PIR sensor is probably the easiest and cheapest way to implement it. Having 5 available allows you to cover more rooms and / or more angles.
    Definitely recommended!
    Images in this review
    Customer imageCustomer imageCustomer image
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Product Summary: HiLetgo 5pcs HC-SR501 Human Sensor Module Pyroelectric Infrared PIR Motion Detector Modules

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3.6 out of 5 stars, 1,089 ratings

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