Is there a place to add photo resistor in the board?

It's configured with a photo resistor so it doesn't trigger during daylight. In my application I want mine to trigger anytime someone enters the bathroom, so I jumped it out of circuit. If you hold the board with the potentiometers up there is a row of resistors just below them. The one on the right being the photo transistor. The the body is clear, so it can detect light, that makes it easy to spot. It's placement on the opposite side of the board than that of the sensor, kind of makes it worthless.

Is this affected by heat? i have an am312 that throws false positives when my hvac turns on.

Yes, the Passive InfraRed (PIR) sensor detects hot things moving. If your HVAC moves hot air in front of the detector, it should be detected.

What does it need to be powered up? like 5v 12v or ac voltage.

Hello, the operating voltage range of this HC-SR501 motion sensor is DC 4.5-20V

What is the spacing on the 3 header pins? (Ground, Signal, Power)

It is 2.54mm pitch on the 3 header pins. Thanks

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

5pcs HC-SR501 PIR Infrared Motion Sensor Human Body IR Movement Detector Sensor Module for Arduino for Raspberry Pi

5pcs HC-SR501 PIR Infrared Motion Sensor Human Body IR Movement Detector Sensor Module for Arduino for Raspberry Pi

Product ID: 97026817

Details

Brand
Stemedu
Color
Green White
Item Weight
60 Grams
Maximum Range
21 Feet
Power Source
Electric

⏳0.5-200s adjustable delay

⚡4.5-20V wide voltage range

📐<100° detection angle

BZ$65

Duties & taxes included

In stock

Sold byAmazon BelizeDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Belize.

Secure transaction

Description

🚀 Elevate your smart space with motion that moves you!

RELIABLE TRIGGER MODES - Choose between single or repeated triggers to tailor sensor response to your environment.
CUSTOMIZABLE DELAY TIMER - Adjust delay from half a second to over 3 minutes to perfectly sync with your smart setup.
PLUG PLAY COMPATIBILITY - Effortlessly integrates with Arduino and Raspberry Pi for rapid prototyping and smart home projects.
LOW POWER HIGH EFFICIENCY - Operates on a minimal quiescent current (<50µA) ensuring energy-efficient performance.
PRECISION MOTION DETECTION - Detects human movement up to 21 feet with a wide 100° cone angle for seamless automation.

The Stemedu 5pcs HC-SR501 PIR Infrared Motion Sensor modules offer precise human motion detection with an adjustable delay timer (0.5-200 seconds) and a wide detection angle under 100°. Compatible with Arduino and Raspberry Pi, these energy-efficient sensors operate on 4.5-20V DC and consume less than 50µA in standby, making them ideal for smart home automation and security projects.

Specifications

ASIN	B07KBWVJMP
Battery Description	battery not included
Best Sellers Rank	#39,316 in Electronics ( See Top 100 in Electronics ) #160 in Motion Detectors (Electronics)
Brand	Stemedu
Color	Green, White, Yellow
Compatible Devices	Arduino, Raspberry Pi
Customer Reviews	4.4 out of 5 stars 360 Reviews
Item Weight	60 Grams
Manufacturer	Stemedu
Maximum Range	21 Feet
Mfr Part Number	ST0057X5
Model Number	3216550596
Mounting Type	Wall Mount
Operating Temperature	30 Degrees Celsius
Power Source	Electric
Temperature Range	3E+1 Degrees Celsius
UPC	747356632386

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

BZ$65

Duties & taxes included

In stock

Sold byAmazon BelizeDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Belize.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

View all Trustpilot reviews