AM312 Mini PIR Motion Sensor Module (2.7–12V) | Infrared Body Detection

Add reliable and ultra-low-power motion detection to your electronics projects with the AM312 Mini PIR Sensor Module.
Using passive infrared (PIR) technology, it detects human presence and movement and outputs a clean digital HIGH signal.

Its wide voltage range DC 2.7–12V makes it fully compatible with 3.3V systems such as:
ESP8266, ESP8285, ESP32, STM32, Arduino, and other microcontroller boards.

⭐ Features

• High sensitivity & reliable performance
  Built with digital signal processing to reduce noise and improve stability.
• Ultra-low power consumption
  Static current <0.1mA — ideal for battery-powered applications.
• Miniature size: only 10 × 8 mm
  Small lens design, perfect for compact or embedded devices.
• Repeatable trigger mode (Auto-Extend Delay)
  When motion is detected, the HIGH output stays active.
  Each detected movement resets the delay timer, preventing false shutdowns.

🔧 Technical Specifications

• Working voltage: DC 2.7–12V
• Static current: <0.1mA
• Delay time: ~2 seconds
• Blocking time: ~2 seconds
• Trigger mode: Repeatable trigger
• Detection range: 100° cone angle, 3–5 meters (depending on lens)
• Operating temperature: -20°C to +60°C
• PCB size: 10 × 8 mm
• Lens type: Mini PIR lens

🏠 Applications

The AM312 PIR module is ideal for:

• Motion-activated lights
• Smart home automation
• Security and alarm systems
• Auto-switch control systems
• Low-power sensing projects
• Arduino / ESP DIY electronics