HC-SR501 PIR Motion Sensor: Datasheet, Pinout and Specifications
HC-SR501 datasheet pdf and Unclassified product details from Ai-Thinker stock available at Utmel









HC-SR501 is the PIR sensor stands for the passive infrared sensor. This post mainly covers datasheet, specifications, schematics, pinout, Arduino, and more details about the HC-SR50 PIR motion sensor. Furthermore, there is a huge range of semiconductors, capacitors, resistors, and ICs in stock. Welcome your RFQ!

HC-SR501 PIR Motion Detector - With Arduino & Raspberry Pi
HC-SR501 Pinout

HC-SR501 Pinout
| Pin Number | Pin Name | Description |
| 1 | Vcc | Input voltage is +5V for typical applications. Can range from 4.5V- 12V |
| 2 | High/Low Output (Dout) | Digital pulse high (3.3V) when triggered (motion detected) digital low(0V) when idle(no motion detected |
| 3 | Ground | Connected to the ground of the circuit |
HC-SR501 Description
The HC-SR501 PIR Motion Sensor Detector Module allows you to detect motion. It's virtually often utilized to detect human movement within the sensor's range. It's also known as a "PIR," "Pyroelectric," "Passive Infrared," or "IR Motion" sensor.
HC-SR501 General Specifications
HC--SR501 Body Sensor Module
Adjustable delay
Adjustable sensing range
Input voltage: DC 4.5-20V
Static current: 50ua
Sensing range: Max 7 m
HC-SR501 Features
Wide range on input voltage varying from 4. V to 12V (+5V recommended)
The output voltage is High/Low (3.3V TTL)
Can distinguish between object movement and human movement
Has to operate modes - Repeatable (H) and Non- Repeatable (H)
Cover distance of about 120° and 7 meters
Low power consumption of 65mA
Operating temperature from -20° to +80° Celsius
Specifications
- TypeParameter
- Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
Plugin - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tray - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
RoHS Compliant
HC-SR501 Applications
Burglar Alarms
Security cams as motion detectors
Industrial automation and control
Automatic Street/Garage/Warehouse or Garden Lights
Industrial Automation Control
Alternatives for HC-SR501
IR Sensor, Ultrasonic Sensor
How to Use HC-SR501
The HC-SR501 can be used as a stand-alone unit for most applications. The output signal can be used to control relays and LEDs. The HC SR501 module has the advantage of being a full ready-to-use module that does not require any extra components or platforms, such as an Arduino board or a Raspberry Pi board. You can use it on its own to detect motion using PIR sensors. Simply add power to the module and connect your device to the output and ground pins to use it independently. One thing to keep in mind is that because this PIR motion detector module is a low-current device, it cannot control high-current devices directly. You must utilize a transistor at the output of the PIR module to drive a high current module, and then you will be able to drive that high current device.
HC-SR501 Package

HC-SR501 Package
HC-SR501 Manufacturer
Ai-Thinker Co., Ltd., a professional supplier of wireless communication modules for the Internet of Things, was founded in 2012. WiFi, Bluetooth, LoRa, offline voice, UWB, NB-IoT, 2.4G, GPS, 4G communication modules, and IoT wireless connection solutions are all supported by global IoT terminals. The products are compatible with Internet of Things (IoT) applications, allowing them to work together to create smart cities, smart homes, smart wearables, smart security, smart farming, and other industrial endpoints. Essence supports the Internet of Things by focusing on wireless connectivity and making wireless networking more convenient.
What is HC-SR501 used for?
The HC-SR501 PIR motion sensor is built around the BISS0001 Micro Power PIR Motion Detector IC. This IC is specifically developed to process the signal from PIR motion sensors. If you remove the Fresnel lens, you will see the RE200B pyroelectric sensing element.
How does HC-SR501 work?
HC-SR501 is a motion detector sensor, which uses infrared waves for the detection of an object. It is an automatic control device; also has large sensitivity and high reliability. It is used in auto-sensing control devices, where we need to perform motion detection.
What is the range of HC-SR501?
The HC-SR501 has a maximum sensing distance (detection range) of 7 meters. You can adjust the sensing distance by rotating the sensitivity potentiometer CW or CCW.
How do I connect HC-SR501 to Raspberry Pi?
Connect the 40 pin cable on the GPIO pins of your Pi (if necessary, remove the cover of your Pi first) Plug the cobbler onto the breadboard as shown in the figure above or below. Plug the other end of the 40 pin cable in the T-cobbler. Connect the VCC pin of the sensor with a 5V pin (red wire)
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