DIYmall 5 Pack HC-SR501 Pir Motion IR Sensor Body Module Infrared for Arduino
Key features
- •100% brand new with good quality
- •automatic sensor:when enter the sensor,output range is high,when people leave the sensor, range of the automatic off, output low
- •photosensitive control,optional, factory is not set
- •temperature compensation
- •two trigger mode:not repeat the trigger, repeatable trigger
DIYmall 5 Pack HC-SR501 Pir Motion IR Sensor Body Module Infrared for Arduino
List Price: $18.41$16.57DEALYou Save: $1.84 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 23, 2026In Stock (1)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.4
out of 5
Based on 10 reviews
5★
60%
4★
40%
3★
0%
2★
0%
1★
0%
Good buy
Unikia Wright✓ Verified Purchase•February 2, 2024
Was intact and serves well in my project long lasting too.
THey are what they are at a great price
TVH✓ Verified Purchase•January 28, 2024
I think the headline says it all
Work good, highly susceptible to RF interference (specifically wifi)
Jonathan Carr✓ Verified Purchase•December 14, 2023
These sensors work great in isolated environments that have no wifi signals. They are extremely susceptible to RF interference, so much so that even though the sensor was placed in an enclosed box it would trigger when opening any of my exterior doors which caused a measurable difference in RF signals in my house. Seems like very strange behavior. This issue can be resolved by adding a 220nf capacitor to pin 4&5 of the IC.
The good ones are great, but the others...
Handy Forms✓ Verified Purchase•December 14, 2023
This is probably the most common PIR sensor available. It's easy to use, and quite sensitive. But before you build your project around one, I suggest you set up a test to see whether they are reliably reporting detection or perhaps over-reporting. Of the 5 purchased, 2 of them consistently reported people that just weren't there (or perhaps reported ghosts?). Setting all 5 to maximum sensitivity, first I tested to be sure that all 5 detected motion - they did. Then I aimed them at a wall and let them report hourly detections all night with no one around. One reported an average of 45 detections per hour, another saw about 15, and the other 3 reported zero. Apparently 2 have a more vivid imagination than the others. So, 2 went in the trash and 3 are usable. I guess at about 2 bucks apiece, 3 out of 5 shouldn't be a surprise. I would give 5 stars to the 3 good ones, and 1 star to the other 2, for an average of 3.4 -- but feeling generous and considering the low cost, I rounded up to 4.
Not for 3.3V operation
Alan✓ Verified Purchase•December 13, 2023
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.
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