$9.49

Get Fast, Free Shipping with Amazon Prime FREE Returns

FREE delivery Thursday, July 10 on orders shipped by Amazon over $35

Or Prime members get FREE delivery Tomorrow, July 6. Order within 17 hrs 8 mins.

In Stock

$$9.49 () Includes selected options. Includes initial monthly payment and selected options. Details

Enhancements you chose aren't available for this seller. Details

${cardName} not available for the seller you chose

${cardName} unavailable for quantities greater than ${maxQuantity}.

Ships from

Amazon

Sold by

DIYmall

Payment

Secure transaction

Add a gift receipt for easy returns

How to adjust HC-SR501 Pir Sensor Sensitivity and Time DelayDIYmall

Image Unavailable

Image not available for
Color:

To view this video download Flash Player

2 VIDEOS

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

Name: Amazon.com: DIYmall 5 Pack HC-SR501 Pir Motion IR Sensor Body Module Infrared for Arduino : Electronics
Price: 9.49 USD
Availability: InStock
Rating: 4.2 (524 reviews)

Visit the DIYmall Store

524 ratings

Amazon's Choice

$9.49

Get Fast, Free Shipping with Amazon Prime

FREE Returns

Brief content visible, double tap to read full content.

Full content visible, double tap to read brief content.

Bundles with this item

HC-SR501 Pir Motion IR Sensor + USB Cable for Arduino

$16.48
DIYmall HC-SR501 Pir IR Motion Sensor + 1 Channel 5V Relay Module for Arduino

$17.48
HC-SR501 PIR Motion Sensor + RCWL-0516 Motion Detection Sensor

$17.48
HC-SR501 PIR Motion Sensor + Resistor Kit 73 Values1460PCS

-4% $22.49

{"desktop_buybox_group_1":[{"displayPrice":"$9.49","priceAmount":9.49,"currencySymbol":"$","integerValue":"9","decimalSeparator":".","fractionalValue":"49","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"rnBEiQzLf4PeAX5xIYXztBdcfOhb%2F08Vu0yOc4%2FIVSHMJUpGGBqt30w88xLRASAgdroR7AQHaspFi1z9albswXur9w9TLtLasgeIvBxEVkZpPhvlPcvsBx1a7k4upaqFhFuvY%2Bi09VDG7SUc%2FIDrmv83tPZP4GOzYcEC8GxeLjLjoIvPuRXy%2BsFP7HppbGBv","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}]}

Purchase options and add-ons

Brand	DIYmall
Color	HC-SR501
Power Source	Corded Electric
Item Weight	1.58 Ounces
Maximum Range	15 Feet

About this item

Using Potentiometer 105, output timing is from 0.5S to 200S
Widely used in:Security Products,human body sensors toys,human body sensor lighting industrial automation and control, etc
NOTE: On this retrigger jumper is a solder jumper, and you need solder it by yourself
Pls note that there is no IR emitter in this module, the principle of PIR sensor is to detect the infrared radiation emitted by the human body, it only have a IR sensor (cell)
Package Included: 5 X HC-SR501 PIR Infared Sensor

› See more product details

Report an issue with this product or seller

Similar item to consider

Amazon's Choice

Amazon Basics LED Puck Lights, Color Changing, Battery Operated, IR Remote, 40 Lumens, 2 Pack, Wireless Stick on Lights, Under Cabinet Lighting, Ideal for Closets, and More, White

(2318)

$6.66 ($3.33/count)

This item: DIYmall 5 Pack HC-SR501 Pir Motion IR Sensor Body Module Infrared for Arduino

$9.49

Get it as soon as Thursday, Jul 10

In Stock

Sold by DIYmall and ships from Amazon Fulfillment.

ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects

$6.98

Get it as soon as Thursday, Jul 10

In Stock

Sold by ELEGOO Official US and ships from Amazon Fulfillment.

HiLetgo 2pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger

$7.39

Get it as soon as Thursday, Jul 10

In Stock

Sold by HiLetgo and ships from Amazon Fulfillment.

Total price: $00

To see our price, add these items to your cart.

Try again!

Details

Added to Cart

These items are shipped from and sold by different sellers.

Show details Hide details

Choose items to buy together.

Product Description

Parameter:

Condition:100% brand new with good quality

Product Type: HC--SR501 Body 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)

Delay time: 5-18S(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

Sensor Diameter:23mm(Default)

Applications:

* Security Products

* the human body sensors toys

* the human body sensor lighting industrial automation and control, etc

Use:

It 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,is a hightech 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.

Package Included:

5 X HC-SR501 PIR Infared Sensor

NOTE:

On this retrigger jumper is a solder jumper, and you need solder it by yourself.

HC-SR501 PIR Sensor Sensitivity and Time Delay is adjustable

There are two potentiometers onboard.

One is to adjust the sensitivity, and the other is to adjust delay time.

Also there are two trigger mode. One is Single trigger mode, which means that delay is started immediately upton detecting motion, and continued detection is blocked. The other is Repeatable trigger mode, timely delay is re-started every time motion is detected.

	Benewake TFmini-S Lidar Range Finder Sensor Module Single-Point Micro Ranging...	DIYmall Benewake TFmini Plus Laser Level Distance Sensor Waterproof IP65 Lida...	Benewake TF-Luna LiDAR Module Range Finder Sensor Single-Point Micro Ranging ...

Customer Reviews	14	21	32
Price	$43.90	$49.90	$25.98
Name	Benewake TFmini-S	Benewake TFmini Plus	Benewake TF-Luna
Range	0.1-12m	0.1-12m	0.2-8m
Communication Inerface	UART,I2C,I/O	UART,I2C,I/O	UART,I2C,I/O
Voltage Range	5V	4.5-5V	3.7-5.2V
Wire Length	10cm	30cm	10cm
Output Data	Single-point, distance value	Single-point, distance value	Single-point, distance value
Baud Rate	115200	115200	115200

Product information

Technical Details

Brand	‎DIYmall
Color	‎HC-SR501
Power Source	‎Corded Electric
Item Weight	‎1.58 Ounces
Maximum Range	‎15 Feet
Compatible Devices	‎Incandescent Lamp
Recommended Uses For Product	‎Security Products
Manufacturer	‎DIYmall
UPC	‎717520589952
Part Number	‎FZ0057-
Item Weight	‎1.58 ounces
Product Dimensions	‎1.18 x 0.98 x 0.79 inches
Country of Origin	‎China
Item model number	‎4331029690
Is Discontinued By Manufacturer	‎No
Size	‎PIR sensor
Item Package Quantity	‎1
Batteries Included?	‎No
Batteries Required?	‎No

Additional Information

ASIN	B012ZZ4LPM
Customer Reviews	524 ratings 4.2 out of 5 stars
Best Sellers Rank	#38,747 in Electronics (See Top 100 in Electronics) #118 in Motion Detectors (Electronics)
Date First Available	September 23, 2013

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

Product Warranty: For warranty information about this product, please click here

Feedback

Would you like to tell us about a lower price?

From the brand

Founded in 2014, DIYmall. Specializes in providing comprehensive solutions for LoRa, IOT/IIOT, Audio, Automation, Smart Home, etc.

Top-selling
New Arrivals
LoRa32 V3 Kit for Meshtastic
Servos
WS2812B LED Ring

Compare with similar items

	This Item DIYmall 5 Pack HC-SR501 Pir Motion IR Sensor Body Module Infrared for Arduino	Recommendations Stemedu HC-SR312 AM312 Mini PIR Human Body Motion Sensor Module Pyroelectric Infrared IR Distance Detector for Arduino (Pack of 5)	WWZMDiB 5Pcs AM312 Mini Pir Motion Sensor Module HC-SR312 IR Human Sensor for Arduino	Weewooday 10 Pieces Am312 Pir Sensor Mini Pir Motion Sensor Infrared Human Body Pyroelectric Infrared Motion Module 2.7v to 12v	Rcvaoth 5PCS HC-SR501 Pir Motion IR Sensor Body Module Infrared	WWZMDiB 5Pcs HC-SR501 PIR Motion Sensor Module + 2Pcs Exclusive housing for Arduino Raspberry Pi Toys, Lamps, Electronic Equipment
	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment
Price	$9.49	$9.98	$8.99	$15.99	$2.99	$8.99
Delivery	Get it as soon as Thursday, Jul 10	Get it as soon as Thursday, Jul 10	Get it as soon as Thursday, Jul 10	Get it as soon as Thursday, Jul 10	Get it Jul 30 - Aug 8	Get it as soon as Thursday, Jul 10
Customer Ratings	4.2524	4.632	4.135	4.4102	4.02	4.147
Sold By	DIYmall	Stemedu	WWZMDiB	Charlinuoer	HuaYiFan US	WWZMDiB
power source	Corded Electric	Battery Powered	Corded Electric	Battery Powered	Battery Powered	Battery Powered
maximum range	15 feet	5 meters	5 meters	5 meters	—	—
controls type	infrared	infrared	—	infrared	—	—

Customer reviews

524 global ratings

How customer reviews and ratings work

Review this product

Write a customer review

Customers say

Customers find the motion detector works well with Arduino circuits and serves as a good PIR sensor for DIY projects, being easy to hook up and offering good value. The sensitivity receives mixed feedback - while some find it amazingly sensitive, others say it's not sensitive enough. Moreover, the quality and accuracy get mixed reviews, with some reporting a 60% failure rate and less accuracy, while false positives are a significant concern for many customers.

Select to learn more

Functionality Value for money Motion sensor Ease of use Sensitivity Quality Accuracy False alarms

72 customers mention "Functionality"59 positive13 negative

Customers find that the motion sensor works well and is suitable for most applications, with one customer noting it functions perfectly with Arduino circuits.

"Bought these for Halloween decoration triggering. They work well, but the overall design has it's limitations (doesn't matter what MFG)...." Read more

"Hooked the VCC and ground to a 12v A/C adapter and it worked perfect...." Read more

"These modules are perfectly good for most applications they are intended for...." Read more

"...They work good for my chosen application." Read more

20 customers mention "Value for money"17 positive3 negative

Customers find the motion sensor to be good value for money.

"...It's awesome, gives me so much more control and cheaper. I do get some false-positives, but not nearly as much as with the pre-built unit...." Read more

"...2, for an average of 3.4 -- but feeling generous and considering the low cost, I rounded up to 4." Read more

"Nice PIR sensor and good price for 5. Well packaged, all 5 work...." Read more

"Great price, amazingly sensitive and reliable...." Read more

16 customers mention "Motion sensor"12 positive4 negative

Customers find the motion sensor effective, noting it can detect motion across an entire area and works well for Arduino projects.

"These are good PIR sensors for Arduino projects. The adjustments are really sensitive, the smallest adjustment makes a pretty big change...." Read more

"Nice PIR sensor and good price for 5. Well packaged, all 5 work...." Read more

"...For those complaining about false positives, and unreliable readings......" Read more

"...It can spot motion across an entire (average) room easily...." Read more

8 customers mention "Ease of use"8 positive0 negative

Customers find the motion sensor easy to use and hook up.

"This is probably the most common PIR sensor available. It's easy to use, and quite sensitive...." Read more

"These work great, and are easy to hook up and adjust. One of the five didn't work, but for the price I still think its a great deal...." Read more

"...Very easy to hookup with ample code available on the net. I have these hooked to an ATTINY85 programmed to turn on when motion is detected...." Read more

"...They seem to detect motion well and hookup is really easy...." Read more

21 customers mention "Sensitivity"12 positive9 negative

Customers have mixed opinions about the motion detector's sensitivity, with some finding it amazing while others say it's not sensitive enough.

"...Very wide sensitivity pattern. Tho description says "< 100 degrees" I thought it was greater than 120...." Read more

"...So you may have to rotate it 90* as it's not a cone of sensitivity, more like a long oval in one plane." Read more

"...It's easy to use, and quite sensitive...." Read more

"...I tweaked and tweaked and it just seems like there isn’t fine adjustment. The motion detection was either too sensitive or not sensitive enough." Read more

13 customers mention "Quality"5 positive8 negative

Customers have mixed opinions about the motion sensor's quality, with some finding it good while others report poor quality and mention a 60% failure rate.

"...To be clear, this product is defective. Amazon needs to take action." Read more

"Was intact and serves well in my project long lasting too." Read more

"...NOT RECOMMENDED!" Read more

"...work, this seems like a decent product, but having a 60% failure rate is pretty extreme. 2 stars for the 2 PIRs that actually work." Read more

5 customers mention "Accuracy"0 positive5 negative

Customers report issues with the motion sensor's accuracy.

"...bought on Amazon, but upon validation we discovered that they have an inconsistent (and possibly oscillatory) “desensitization” period between the..." Read more

"...that operating voltage is from 5V. Yes, it is working but accuracy is kind of unreliable...." Read more

"...They were less Accuracy and after an hour of usage, they keep sensing even if no one is in the room... i paid more money and bought a different..." Read more

"Poor quality, constant false readings." Read more

5 customers mention "False alarms"0 positive5 negative

Customers report issues with false alarms from the motion sensor.

"...It's awesome, gives me so much more control and cheaper. I do get some false-positives, but not nearly as much as with the pre-built unit...." Read more

"...However, it is useless and give LOTS of FALSE POSITIVES...." Read more

"...Adjustments to the onboard pots could not resolve the numerous false alarms. Note by numerious, I mean about a false alarm every minute or two...." Read more

"...False positives all day long with all 5 boards, tried putting them in a cardboard box and they still have false triggers very, very often." Read more

Reviews with images

See all photos

Top reviews from the United States

There was a problem filtering reviews. Please reload the page.

CJ Water-Stats
Inexpensive motion sensors
Reviewed in the United States on December 4, 2024
Verified Purchase

These are great for turning the screen off and on, in my controller box.

Read more

Helpful

Report
christopher laut
awsome
Reviewed in the United States on December 8, 2024
Verified Purchase
perfect just what i needed

Read more

Helpful

Report
M/G
Overall good motion sensor; very ambient light/movement direction sensitive
Reviewed in the United States on March 16, 2025
Verified Purchase
Bought these for Halloween decoration triggering. They work well, but the overall design has it's limitations (doesn't matter what MFG). Super sensitive to ambient light, so works well in a darker/indirect light situation. Also only really sensitive in 1 plane/movement direction. So you may have to rotate it 90* as it's not a cone of sensitivity, more like a long oval in one plane.

Read more

Helpful

Report
Alan
Not for 3.3V operation
Reviewed in the United States on December 18, 2023
Verified Purchase
I left 5 stars because this listing for the HR-505 was truthful and said 4.5V as the minimum operating voltage. Many other listings say 3.3 to 12V. These are useless for that and cost me a couple days before I gave up. You need the AM312 for 3.3V usage.

Read more

Helpful

Report
CTX
Better than a pre-built motion sensor switch
Reviewed in the United States on March 22, 2019
Verified Purchase
I first bought a pre-built 'smart' light switch with a motion sensor that was WAY too sensitive and couldn't be adjusted. I decided to go the DIY route and bought these. I connected one to a NodeMCU, which I set up with Home Assistant using MQTT (along with a simple 'smart' switch sans motion sensor).

It's awesome, gives me so much more control and cheaper. I do get some false-positives, but not nearly as much as with the pre-built unit. I suspect it's due to being in the garage and the sensor picking up sunlight/shadows coming in through cracks in the garage door.

Overall, very happy with the purchase.

Read more

2 people found this helpful

Helpful

Report
ROEJA
Defective. Do not buy for any scientific use. Missing capacitor.
Reviewed in the United States on May 18, 2025
Verified Purchase
According to specs, these PIRs should be identical to others we’ve bought on Amazon, but upon validation we discovered that they have an inconsistent (and possibly oscillatory) “desensitization” period between the HIGH state trigger and the return to LOW state. Turns out, they’re missing a capacitor that’s crucial for consistent timing, rendering them useless for timescale measures. I’ve included a picture of the missing capacitor as well as a picture of a fully functioning device from another Amazon seller.

What’s worse is that this is not just a simple error — they seem to have been intentionally snipped! The seller likely received complaints about latency, and this was their fix. You can see the same modification in other customers’ (positive) review images.

To be clear, this product is defective. Amazon needs to take action.

Read more

ROEJA

Defective. Do not buy for any scientific use. Missing capacitor.

Reviewed in the United States on May 18, 2025
According to specs, these PIRs should be identical to others we’ve bought on Amazon, but upon validation we discovered that they have an inconsistent (and possibly oscillatory) “desensitization” period between the HIGH state trigger and the return to LOW state. Turns out, they’re missing a capacitor that’s crucial for consistent timing, rendering them useless for timescale measures. I’ve included a picture of the missing capacitor as well as a picture of a fully functioning device from another Amazon seller.

What’s worse is that this is not just a simple error — they seem to have been intentionally snipped! The seller likely received complaints about latency, and this was their fix. You can see the same modification in other customers’ (positive) review images.

To be clear, this product is defective. Amazon needs to take action.

Images in this review

Helpful

Report
Gee Bees
These sensor do work but must be driven by 5V+
Reviewed in the United States on October 25, 2022
Verified Purchase
I'm providing a middle rating because documentation is not good.

I don't know if I misread the specs when I purchased but I thought these PIR sensors would work with 3.3v input/source voltage and output 0v low and 3.3v High on output.

I now know that they certainly need 5v source input voltage and output 3.3v.

When I provided 3.3v input power they acted erratically and would not go predictably low. Using 5v input the 3.3v output consistently dropped low to 0v.

In Summary: 5v In = consistent 3.3v out when triggered, and 0v when clear/not triggered.

Read more

6 people found this helpful

Helpful

Report
Rob
Can't beat these for the price.
Reviewed in the United States on November 2, 2017
Verified Purchase
Hooked the VCC and ground to a 12v A/C adapter and it worked perfect. The 3.3v "trigger" pin (the "OUT") even had enough juice to directly power a red LED (tho a little dimmer than normal). Very wide sensitivity pattern. Tho description says "< 100 degrees" I thought it was greater than 120.
At default sensitivity it would trigger easily from 8-10' away. I never adjusted it as that was the perfect distance for my needs.
Holding it with the sensor "dome" facing down and the adjusting (orange) "screws" facing you, the left one is the sensitivity, the right is the duration that the OUT pin will stay "on" (i.e. hold at 3.3v). Minimum seems to be around 4 seconds.

Read more

18 people found this helpful

Helpful

Report

Top reviews from other countries

A Bastien
Too many false motions
Reviewed in Canada on February 28, 2022
Verified Purchase

These are useless as motion detectors due to the false reports. Yes I tried the pF capacitor from Signal to Ground and I shortened the signal wire. It did reduce the false motions but they still happen few minutes. Unfortunately I can't send them back due to adding the capacitor to the circuit. I would not recommend these to anyone. I will try to keep fussing with them. I am trying now on a Wemos D1 Mini with less than 1 cm of signal wire from PIR to data pin.
UPDATE: Still bad on the wemos with <1 cm wire. Tried pull up resistor - no effect. Increased and decreased capacitor size - no effect.

I've ordered a different type. Hope they work.

Read more
Report

See more reviews

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

Bundles with this item

Purchase options and add-ons

About this item

Similar item to consider

Frequently bought together

Customers who viewed this item also viewed

Product Description

HC-SR501 PIR Sensor Sensitivity and Time Delay is adjustable

Product information

Technical Details

Additional Information

Warranty & Support

Feedback

Where did you see a lower price?

Videos

Videos for this product

Videos for this product

Videos for this product

Videos for this product

From the brand

Top-selling

New Arrivals

LoRa32 V3 Kit for Meshtastic

Servos

WS2812B LED Ring

Compare with similar items

Customer reviews

Review this product

Customers say

Select to learn more

Images in this review

Reviews with images

TWO DIFFERENT POTENTIOMETERS. GET THE RIGHT ONE.

Top reviews from the United States

There was a problem filtering reviews. Please reload the page.

Defective. Do not buy for any scientific use. Missing capacitor.

Images in this review

Top reviews from other countries

1.0 out of 5 stars Too many false motions

Too many false motions