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Condition:100% brand new with good quality
Product Type: HC--SR501 Body Sensor Module
Operating voltage range: DC 4.5-20V
Quiescent Current: 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: 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:
3* HiLetgo HC-SR501 PIR Infared Sensor
ITSITSYSTEM
Reviewed in Saudi Arabia on January 31, 2025
working good with arduino.
Scott
Reviewed in the United States on January 23, 2025
Two of them functioned fine. The third did not work at all. For the price, it wasn't worth going through a return, so maybe buy one extra. Making fun small projects gets expensive in time and gas if you have to do a lot of returns.
Martin S.
Reviewed in Canada on August 7, 2024
I ordered for my kid for experimenting with Arduino, he says they work great
BG
Reviewed in the United States on June 23, 2024
The sensor does exactly what it says. I opted to have it trigger on every movement (vs latched), and it works every time.However, mounting can be tough. There are no mounting holes, and the output pins are not long enough to plug directly into a PCB. I will likely plug it into a 3-pin socket and mount that to a PCB, and then mount the PCB itself to my project case.
Customer
Reviewed in the United States on December 19, 2024
Works as advertised.
Andrew Korth
Reviewed in the United States on September 28, 2023
At first I thought these were defective, but I found that when using it with a Raspberry Pi 4, it requires an extra diode before the V-in pins, otherwise some voltage instabilities from the Pi will cause false triggers very regularly on 60-second cycles (actually 59.75 seconds if you measure it out for a long enough time).After a lot of testing, including using it to drive an LED (no output to the pi itself), I was almost ready to give this a bad review, before I found some suggestions online for other HC-SR501 sensors regarding their behavior under power instabilities.I do not believe this issue was due to outside EM interference, as I tried it at multiple locations.Other than that, happy with the product and price.
guy_patterson
Reviewed in the United States on September 16, 2023
Try starting with the sensitivity adjustment dial turned completely counter-clockwise and the delay dial completely clockwise. I found it a lot easier to tweak and troubleshoot at these settings and fine tune at the end. Also change the jumper on the underside unless you want repeat trigger mode. The component itself is durable enough and effective at the right settings.
Dan
Reviewed in the United States on February 24, 2023
I got these because I had some from ali that started having issues.These worked fine and it was nice to be able to control the time out and sensitivity.
Paul Laska
Reviewed in the United States on November 24, 2023
Once you can figure out how these are supposed to work, they do the job well. There are differing opinions (documentation) on how long the delay time is supposed to run; I read anywhere from 30 mins to 3 mins (mine have measured about 2.5 to 3 mins). The sensitivity doesn't seem to change much. The trigger once / repeat trigger jumper is a nice feature, and makes it possible act as either a digital switch, or an on as long as an infra-red delta is detected. If the input voltage drops to about 4.7v, the sensor misbehaves, and makes it appear as if other parts are failing, because the data output line switches on and off erratically; however, what can you expect with incorrect input voltage.
Aaron
Reviewed in the United States on January 22, 2023
I had some trouble with these initially but it turned out to be due to a sufficient lack of power. I had loaded too many sensors onto my board and was getting a steady stream of false positives until I removed some sensors or added a capacitor.With Esphome these are very easy to integrate into my home automation. I've been slowly replacing my commercial Z-Wave and Zigbee motion sensors with these for the added flexibility and sensitivity.
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