KE4018 Keyes DIY Electronic Brick PIR Motion Sensor

**KE4018 Keyes DIY Electronic Brick PIR Motion Sensor**

**1. Introduction**
The Keyes 2021 New DIY Electronic Brick PIR Motion Sensor module is a high-performance sensor specially designed for electronics enthusiasts and educators. Manufactured with eco-friendly materials, this module ensures safety, durability, and compliance with modern standards. By detecting infrared radiation emitted by objects in the environment, the PIR sensor can sense human body heat, making it widely applicable in security systems, automatic lighting control, and smart home scenarios. With high sensitivity and a broad detection range, this module is an ideal choice for home and industrial automation.

**2. Features**
- **Eco-Friendly Material:** Made of black eco-friendly materials that meet modern safety standards, ensuring stable performance in various environments.
- **High Sensitivity:** Capable of detecting human body heat with high responsiveness, outputting signals when motion is detected.
- **User-Friendly Interface:** Equipped with a 2.54mm red anti-reverse connector for secure and reliable connections.
- **Wide Compatibility:** Compatible with various microcontroller boards (e.g., Arduino, Raspberry Pi), enabling easy integration into smart projects.
- **Easy Installation:** Features a 3-pin white anti-reverse cable for simple wiring, requiring no complex configuration, making it suitable for beginners.
- **Flexible Application:** Ideal for automatic lighting, security monitoring, and other smart home applications.

**3. Specifications**
| Parameter | Description |
|-----------------|--------------------------------------|
| Model | KE4018 |
| Sensor Type | PIR Motion Sensor |
| Cable Length | 200mm |
| Operating Voltage | DC 5V |
| Interface Type | 2.54mm Pitch Anti-Reverse Interface |
| Detection Angle | 110 degrees |
| Detection Range | 3-7 meters |
| Power Consumption| Approx. 20mA (at 5V operation) |

**4. Working Principle**
The PIR motion sensor operates based on the pyroelectric effect, detecting infrared radiation in the environment, typically emitted by the human body. The workflow is as follows:
- **Power Connection:** The module connects to a power supply via a 2.54mm interface, operating at DC 5V.
- **Signal Output:** When human body heat is detected, the module outputs a high-level signal; when no heat source is present, it outputs a low-level signal.

**5. Pin Description**
| Pin Name | Description |
|----------|-----------------------------------------------------------------------------|
| VCC | Positive power supply connection (DC 5V input) |
| GND | Negative power supply connection |
| S | Signal output pin; outputs a high-level signal when human motion is detected |