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Your cart is empty. Technical parameters:
1. Working voltage: DC 2.7-12V;
2. Static power consumption: 3. Delay time: 2 seconds;
4. Blocking time: 2 seconds;
5. Trigger mode: repeatable;
6. Sensing range: ≤100 degree cone angle, 3-5 meters; (depending on the specific lens)
7. Working temperature: -20 - +60 °C;
8.PCB dimensions: 10mm*8mm;
9. Module lens: small lens;
Package Includes:
3* AM312 Mini Pyroelectric PIR Human Sensor Module
Richard
2025-08-29 21:32:39
Great little PIR sensor, great range and sensitivity. Works as advertised. all three worked.
J. Scott
2025-08-15 09:52:14
These are tiny and don't require any adjustments to use. All of them worked perfectly for me. The range is probably 10-15 feet. They do need a 'warm-up' period before they start giving consistent readings. As soon as they're turned on, it runs for 2 seconds, but it usually takes about a minute before the readings are consistent. I use these with 3 volt logic micro-controller. Definitely recommend.
Kindle Customer Yongwoo Kim
2025-08-07 19:39:37
According to an well known YOUTUBEr and Arduino S/W & H/W engineer, he thinks the RF emission from a near by device, could cause PIR devices unstable. He tried many but only AM312 worked stable. It is inexpensive and works on both 3.3V or 5V. It is small too. My only complain is that the sensitivity at 3.3V power condition, it may will sense a motion for a distances no further than 3-4 feet. For sensing distance any further, I think you should consider higher(5V, etc) supply voltage or a larger size lens window.
mikhail
2025-07-22 12:08:38
The media could not be loaded.
Tim Corcoran
2025-05-17 13:25:49
Trivially simple device to work with, at least in Arduino/ESP32. Just a single wire after VCC (3.3V-12V) and Gnd. There are some libraries but totally unnecessary. In minutes I had a simple example working. Can recommend a great RandomNerdTutorial, search for “ESP32 PIR Interruptsâ€. The sensor has a limited range but perfect for my application., dimming a clock when nobody is around. Cheap and simple.Sadly, just 2 of my devices worked. The third triggered at random constantly which made it useless. Solder quality is poor so I reflowed the entire module but no change. I needed the module for a project so I didn’t want to return all 3 and wait for a new shipment so I accepted a 33% failure rate and that’s pretty bad. In short, module good, build quality poor. That’s my second bad product from Hiletgo, the other one (ESP32-S3 Mini board) they wouldn’t even reply to repeated support messages about. I’m not sure I will buy from them again.
Kirk Terrell
2025-04-13 18:04:17
Have not used these as of yet. If they work then there will be no more review
Smoketronics
2025-02-13 15:17:46
Perfect for use with Raspberry Pi. Wide input voltage range, no adjustments. Output is always 3 Volts regardless of power supply. These will not directly drive an LED so if testing that way, use a 2222 or similar transistor. Sensitivity is better at 5V or higher than at 3V. All of mine worked right out of the package.I will build something to mess with the cat!
John Boyter
2025-02-11 16:13:16
I've had some PIRs like this in the past and they worked fine. Unfortunately, like others are saying, the QC on these are terrible. All three PIRs like to go off randomly. I can't get a consistent reading. I really thought my code was wrong or that my ESP8266s were acting up. I spent A LOT of time and effort before finally realizing that the problem are the PIRs themselves. Go elsewhere.
Javier Sabate
2025-01-24 17:08:44
This device works perfectly and responds shortly in more or less 2 seconds.
Angelo
2025-01-14 11:23:59
Articolo che rispecchia quello descritto nella pagina. Da segnalare che la copertura in plastica che si trova nella parte superiore del sensore si stacca dalla sede con facilita' ma basta un po' di colla per ovviare al problema. Rispetto al fratello maggiore HC-SR501, l"AM312 ha un'angolo leggermente piu' stretto ma non di certo funziona male. Molto discreto puo' essere utilizzato in progetti dove lo spazio per l'installazione e' molto ristretto. Non e' possibile tramite hardware o software modificare tempi di funzionamento o sensibilita' o rimanere eccitato in caso di movimento. In pratica tale sensore funziona come un'interruttore...se qualcosa passa davanti lui da il segnale stop...
José M.S.
2025-01-05 19:42:38
Dan un falso positivo cada 10-15 segundos. Compré estos porque me pasaba lo mismo con los HC-SR501. Si alguien sabe por que pasa que me lo diga.
Marco
2025-01-04 13:42:07
Ultilizzo questi IR come sensore PIR di un antifurto realizzato con Node Red. Devo dire che funziona benissimo i rilevamenti sono curati e costanti ma, come ho letto su.mti forum, entro i 3 metri. Nel mio caso entro i 3 metri va benissimo. Di più fatica. Consigliatissimo
In Ufficina con Grisù Gino
2025-01-02 18:46:58
Se volete vedere come funziona collegatevi al mio canale Youtube , cercate : in ufficina con Grisù Gino , mi raccomando iscrivetevi al mio canale per rimanere sempre aggiornati .
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