The 4-Wire IR Infrared Flame Detection Module is a high-sensitivity security component designed to detect fire sources or light wavelengths in the range of $760\text{nm}$ to $1100\text{nm}$. At Electrapac, we recommend this 4-pin version over the standard 3-pin models because it offers both Digital and Analog outputs, providing greater precision for fire-fighting robots and smart home safety systems.

Product Overview

This sensor uses a specialized infrared receiver tube to detect the specific light spectrum emitted by a flame. The onboard LM393 voltage comparator chip ensures a stable signal, while the 4-wire design allows you to read a simple "Yes/No" digital trigger or a nuanced analog value to determine the intensity or distance of the fire.

Key Features for Electrapac Customers

• Dual Output Versatility:

  • Digital (DO): Outputs a High/Low signal when a flame is detected. Ideal for simple alarms.

  • Analog (AO): Outputs a voltage proportional to the flame's intensity. Perfect for "heat-seeking" logic in robots.

• Adjustable Sensitivity: Features a multi-turn precision potentiometer. You can calibrate the sensor to ignore ambient sunlight or light bulbs while remaining sensitive to a lighter or candle flame.

• Real-Time Indicators: Equipped with two on-board LEDs—one for Power status and one for Signal trigger—making it easy to debug without a computer.

• Fast Response Time: High-speed IR detection ensures your safety system reacts in milliseconds, potentially preventing major fire damage.

• Universal Compatibility: Works seamlessly with Arduino, Raspberry Pi, ESP32, and PIC microcontrollers available at www.electrapac.com.

Wiring & Calibration Guide

To get the most reliable results from your Electrapac flame sensor:

1. VCC/GND: Connect to 3.3V or 5V.

2. DO (Digital): Connect to an Interrupt pin on your Arduino for immediate fire alerts.

3. AO (Analog): Connect to an Analog pin (A0) to measure how "big" or "close" the fire is.

4. Placement: The sensor is sensitive to the infrared spectrum. Keep it away from direct, unfiltered sunlight to avoid false positives.

Pro Tip: For a fire-fighting robot build, mount three of these sensors in a semi-circle (Left, Center, Right) to give your robot "peripheral vision" to locate the fire's exact direction.

Primary Applications

• Fire-Fighting Robots: Detecting and homing in on candles or small fires to extinguish them.

• Industrial Safety: Monitoring gas burners or furnaces for "flame-out" conditions.

• Smart Home Alarms: Adding an extra layer of protection to kitchens or workshops.

• Safety Shut-off Systems: Automatically cutting power to a machine if a spark or flame is detected.

Why Shop at Electrapac?

We source our 4-Wire Flame Sensors with high-quality IR receiver tubes that have improved filtering against ambient light interference. At www.electrapac.com, we provide the safety components that protect your innovations and your environment.