Is the sensitivity adjustable?

Yes there are two pots on the board you can use to adjust. Check the web for how to do it.

Can i hook this directly to the item i want to switch? it’s dc current.

WRCoyle is pretty much wrong on their answer. I'm assuming you want to turn electricity on to another device with this? The answer to that is no. This provides a logic output that is high when it is triggered and low when on standby. The BISS0001 chip on this has the output pin rated for 10mA and it goes straight to the out pin on the board, no transistor used to handle more power. It can run a regular LED using a resistor to limit the LED to 10mA or less. Beyond that, you will need a transistor or solid state relay or some other setup to handle any amount of current.

How would you describe the range and sensitivity of these? I need to detect when motion stops in a 12x14 room of people.

It will sense any movement (heating moving paper) in a room of that size

Could this be used to replace a faulty IR sensor on animated halloween props?

The pir sensor should work but the output is simply a logic level output. It will not provide much current.

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

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

Product ID: 19860536

Details

Brand
DIYmall
Color
HC-SR501
Item Weight
1.58 ounces
Maximum Range
15 feet
Power Source
Corded

⏳0.5s to 200s adjustable output timing

📏15 ft max detection range

🔧DIY solder jumper for retrigger control

KSh3268

Duties & taxes included

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Sold byAmazon KenyaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your smart projects with motion sensing mastery!

BULK PACK ADVANTAGE - Five sensors in one pack to scale your projects or installations without the hassle of multiple orders.
DIY FRIENDLY DESIGN - Includes solder jumper for retrigger functionality, empowering you to tailor sensor behavior like a pro.
PRECISION MOTION DETECTION - Detects human presence up to 15 feet with pinpoint accuracy for smarter automation.
CUSTOMIZABLE TIMING CONTROL - Adjust output delay from half a second to over 3 minutes to fit your unique project needs.
VERSATILE APPLICATION READY - Perfect for security, lighting, toys, and industrial automation—your all-in-one motion sensor solution.

The DIYmall 5 Pack HC-SR501 PIR Motion IR Sensor Modules offer reliable infrared detection with a 15-foot range and adjustable output timing from 0.5 to 200 seconds. Designed for versatile use in security, lighting, and automation, these modules feature a DIY solder jumper for retrigger control and come in a convenient five-pack, making them ideal for both hobbyists and professionals seeking scalable, customizable motion sensing solutions.

Specifications

ASIN	B012ZZ4LPM
Antenna Location	Security Products
Best Sellers Rank	#20,803 in Electronics ( See Top 100 in Electronics ) #107 in Motion Detectors (Electronics)
Brand	DIYmall
Color	HC-SR501
Compatible Devices	Incandescent Lamp
Customer Reviews	4.3 4.3 out of 5 stars (544)
Item Weight	1.58 ounces
Manufacturer	DIYmall
Maximum Range	15 feet
Mfr Part Number	FZ0057-
Model Number	4331029690
Mounting Type	Wall Mount
Number of Items	5
Number of Packs	5
Power Source	Corded Electric
UPC	717520589952

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