1. Introduction
The Keyes 2021 DIY Electronic Building Block Human Infrared Pyroelectric Sensor Module is a high-performance sensor designed for electronics enthusiasts and educators. Made with environmentally friendly materials, it ensures safety, durability, and compliance with modern standards. Human infrared sensors detect the infrared radiation emitted by objects in the surrounding environment, enabling the sensing of human heat. It has wide applications in security systems, automatic lighting control, and smart homes. With its extremely high sensitivity and wide detection range, this module is ideal for home and industrial automation.
2. Features
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Environmentally friendly materials : The main body is made of black environmentally friendly materials, which meet modern safety standards and can operate stably in a variety of environments.
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High sensitivity : The module can sensitively detect the body's heat and output a signal when someone passes by.
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Simple interface : Equipped with a 2.54mm red anti-reverse insertion terminal to ensure safe and reliable module connection.
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Wide compatibility : This module is compatible with a variety of microcontroller control boards (such as Arduino, Raspberry Pi, etc.), making it convenient for users to build various smart projects.
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Easy to install : Equipped with a 3-pin white reverse-insertion-proof connector, wiring is simple and requires no complicated configuration, making it suitable for beginners.
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Flexible applications : Suitable for use in automatic lighting, security monitoring and other smart home projects.
3. Specifications
|
parameter |
describe |
|---|---|
|
model |
KE4018 |
|
Sensor type |
Infrared pyroelectric sensor |
|
Wire length |
200mm |
|
Operating voltage |
DC 5V |
|
Interface type |
Anti-reverse interface with a spacing of 2.54mm |
|
Detection angle |
110 degrees |
|
Detection range |
3-7 meters |
|
Power consumption |
Approximately 20mA (when operating at 5V) |
4. Working Principle
This human infrared pyroelectric sensor module operates based on the pyroelectric effect. It can detect infrared radiation in the environment, which generally originates from the human body. Its working process is as follows:
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Power connection : Connect to a power source via a 2.54mm connector. The module can operate within a DC 5V range.
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Signal output : When the sensor detects human body heat radiation, the module will output a high-level signal; when there is no heat source, it will output a low-level signal.
5. Foot position description
|
Pin Name |
describe |
|---|---|
|
VCC |
Connect the positive power supply terminal; supports DC 5V input. |
|
GND |
negative power connection |
|
S |
The output signal terminal outputs a high level when a human body is detected. |