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

Desertcart Logo

Deliver to Argentina

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🚀 Elevate your smart space with motion-sensing precision!

ENERGY EFFICIENT DESIGN - Consumes less than 50µA in standby, ensuring minimal power drain for long-term use.
VERSATILE WALL MOUNTING - Compact and lightweight design (2.12 oz) with easy wall-mount installation for flexible placement.
CUSTOMIZABLE DELAY TIMER - Adjust delay from 0.5 to 200 seconds to perfectly sync with your smart home or DIY projects.
PLUG PLAY COMPATIBILITY - Effortlessly integrates with Arduino and Raspberry Pi, empowering your next innovative build.
PRECISION MOTION DETECTION - Detects human movement up to 21 feet with a wide <100° cone angle for seamless coverage.

The 5pcs HC-SR501 PIR Infrared Motion Sensor pack offers adjustable delay timing (0.5-200s), a 21-foot detection range, and ultra-low standby current (<50µA). Designed for seamless integration with Arduino and Raspberry Pi, these compact, wall-mountable sensors deliver reliable human motion detection to power your smart home or DIY electronics projects.

Specifications

Brand	Stemedu
Color	Green, White, Yellow
Power Source	Electric
Item Weight	60 Grams
Maximum Range	21 Feet
Mounting Type	Wall Mount
Battery Description	battery not included
Temperature Range	3E+1 Degrees Celsius
Compatible Devices	Arduino, Raspberry Pi
Operating Temperature	30 Degrees Celsius
Manufacturer	Stemedu
UPC	747356632386
Part Number	ST0057X5
Item Weight	2.12 ounces
Product Dimensions	7.87 x 3.15 x 5.91 inches
Item model number	3216550596
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No
Description Pile	battery not included

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.