SKU: SENS-1789
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Generic AM312 Mini IR Pyroelectric PIR Motion Sensor Module - 2.7-12V DC

₹62.00 (Inclusive of all taxes)
Out of Stock

The Generic AM312 is a compact, ultra-low-power PIR motion sensor module designed for human body detection in battery-operated and embedded systems. Operating from 2.7V to 12V DC, it provides a digital output signal compatible with microcontrollers like Arduino, ESP32, and Raspberry Pi for smart lighting, security, and IoT automation projects.

Features

  • Ultra-low static current consumption (< 0.1mA) for extended battery life.
  • Compact digital PIR module with a detection range of approximately 3-5 meters.
  • Wide operating voltage range (DC 2.7V to 12V) for flexible system integration.
  • Digital signal processing ensures stable output with high noise immunity.
  • Fixed ~2-second delay time prevents repeated triggering from sustained motion.

Out of stock

Description

The AM312 Mini IR Pyroelectric PIR Motion Sensor Module utilizes passive infrared (PIR) detection technology to sense changes in infrared radiation caused by moving human bodies. Its integrated digital signal processor filters out environmental noise, providing a clean, reliable TTL-level output signal upon detection.

Designed for low-power embedded applications, the module operates reliably across a broad temperature range from -20°C to +60°C. Its compact PCB form factor and simple three-pin interface (VCC, GND, OUT) facilitate easy integration into security systems, automatic lighting controls, and energy-saving IoT devices.

Key Features

  • Pyroelectric infrared (PIR) sensor with high sensitivity for human motion detection.
  • Digital output signal with built-in processing for enhanced stability and noise rejection.
  • Wide detection cone angle of ≤100° for broad coverage area.
  • Optimized for ultra-low power consumption, ideal for wireless and battery-powered nodes.
  • Compact and lightweight design for seamless installation in space-constrained projects.
  • Fixed trigger delay of approximately 2 seconds to manage output signal timing.

Applications

  • Automatic lighting control and energy management in residential or commercial buildings.
  • Intrusion detection and perimeter security in DIY alarm systems.
  • Presence sensing for smart home automation and IoT devices.
  • Battery-powered wireless sensor nodes for motion-activated triggers.
  • Interactive displays and installations activated by human movement.

Technical Specifications

ModelAM312
Sensor TypePassive Infrared (PIR) Motion Sensor
Detection TechnologyPyroelectric Infrared
Operating VoltageDC 2.7V – 12V
Static Current< 0.1mA
Detection RangeApprox. 3–5 meters
Detection Angle≤ 100° cone angle
Output SignalDigital (TTL)
Delay Time~2 seconds (fixed)
Operating Temperature-20°C to +60°C

Frequently Asked Questions

What is the output signal type of the AM312 sensor module?

The AM312 provides a digital TTL-level output signal. The output pin goes high (typically at VCC logic level) when motion is detected and returns low after the fixed delay period, making it directly compatible with microcontroller GPIO pins.

How do I connect and power the AM312 module?

Connect the module's three pins: VCC (2.7V to 12V DC), GND (common ground), and OUT (digital signal output) to your control board. Ensure a stable power supply within the specified voltage range. A pull-down resistor on the output line is typically not required as it is managed internally.

Can the detection sensitivity or delay time be adjusted on this module?

No, the AM312 module has fixed sensitivity and a fixed trigger delay time of approximately 2 seconds. The delay is managed internally by the digital processor to prevent repeated triggering from continuous motion and cannot be user-adjusted.

Package Includes

  • 1 x Mini IR Pyroelectric PIR Motion Sensor Module (AM312)

Additional Information

Weight 0.003 kg
Dimensions 3 × 3 × 2 cm