About this item

👀 PIR Motion Sensor HC-SR501 – Infrared Detector

💡 The HC-SR501 is a passive infrared (PIR) motion sensor that detects human presence by sensing infrared radiation changes.
Compact, reliable, and cost-effective, it is widely used in home automation, security systems, and Arduino or Raspberry Pi projects.

🛡️ Technical Specifications

• Operating voltage: 4.5V – 20V DC
• Standby current: < 50 µA
• Detection range: 3 – 7 m (adjustable)
• Detection angle: approx. 120°
• Trigger time: adjustable (0.3s – 200s)
• Output modes: repeatable or single trigger
• Output level: TTL (HIGH = detection)
• Dimensions: approx. 32 × 24 mm

🌐 Compatibility

• Arduino, Raspberry Pi, ESP8266, ESP32
• IoT and home automation systems
• Alarm and security devices
• Low-power electronics projects

🛠️ Applications

• 🏠 Automatic light or fan control
• 🔐 Alarm and surveillance systems
• 🤖 Robotics with human presence detection
• ⚡ Energy-saving detection systems

✨ Key Features

• 🔋 Ultra-low power consumption
• 🎯 Reliable detection up to 7 m
• ⚙️ Adjustable sensitivity and delay
• 📦 Compact and easy to integrate