Muonix Flame Sensor Module (High-Sensitivity Infrared Fire Detector)
Protect your automation setups and robotic projects with the industrial-grade Muonix Flame Sensor Module. Engineered for rapid emergency response, this high-sensitivity module is designed to detect the presence of open flames or light sources within the specific wavelength spectrum of fire.
The sensor utilizes a specialized infrared receiver tube that maps changes in infrared radiation. When a fire breaks out, the module instantly processes the light wave fluctuations, triggering an immediate signal response to protect your equipment. Built under strict lead-free manufacturing practices, it serves as the ultimate eco-friendly diagnostic shield for fire-fighting robots, smart home safety grids, industrial warehouse monitors, and boiler system controllers.
Key Features
Flame Wavelength Optimization: Specifically tuned to detect light sources in the range of 760 nm to 1100 nm, which is the exact infrared spectrum produced by a standard hydrocarbon flame.
Dual Output Architecture: Built with both a Digital Output (DO) for quick, instant high/low trigger signals and an Analog Output (AO) for real-time tracking of flame intensity and proximity.
Adjustable Detection Threshold: Features an onboard multi-turn potentiometer, allowing you to finely adjust the sensitivity threshold to match the ambient lighting of your environment.
Onboard LM393 Voltage Comparator: Assembled with the highly stable LM393 comparator integrated circuit, ensuring clean, sharp digital square waves that eliminate false triggers.
Wide Detection Angle: Offers an expansive 60-degree detection cone, making it highly effective at sweeping large surface areas for localized ignition points.
Real-Time LED Status Monitoring: Equipped with two independent indicators—one for central power tracking and another that lights up instantly when a flame passes the detection threshold.
Technical Specifications
Feature | Specification |
Brand | MUONIX |
Operating Voltage | 3.3V to 5V DC |
Detection Spectrum Range | 760 nm – 1100 nm (Infrared Flame Spectrum) |
Detection Range Distance | Up to 80 cm (Depending on flame size and sensitivity settings) |
Output Type | Dual Output: Analog (AO) + Digital (DO) |
Active Logic State | Digital Output drops LOW (0V) when a flame is detected |
Onboard Chipset | High-Precision LM393 Comparator |
Mounting Layout | Pre-drilled M3 screw hole for easy panel attachment |
Board Dimensions | 32 mm x 14 mm x 7 mm |
Lead-Free & Environmental Safety
100% Lead-Free PCB: The base circuit board paths are constructed entirely from eco-friendly, lead-free materials, aligning fully with standard global electronic safety and RoHS compliance norms.
High-Grade Lead-Free Solder Tracks: All hardware tracks, capacitors, resistor networks, and comparator IC pads are bonded using premium, toxin-free solder materials for optimal electrical conductivity.
Superior Durability: The premium lead-free solder tracks resist thermal expansion and joint crystallization under continuous running conditions.
🛡️ Compliance Note: Fully RoHS Compliant & Lead-Free profiling makes this sensor completely safe for educational engineering workshops, university electronics labs, and consumer electronic product manufacturing.
Hardware Wiring & Pin Mapping
The module breaks out a 4-pin interface that maps directly to standard microcontrollers (Arduino, ESP32, STM32, Raspberry Pi):
VCC: Connects to the +3.3V or +5V DC power supply rail.
GND: System Ground Reference.
DO (Digital Output): Outputs a stable TTL High/Low logic level. Connect this straight to a digital input or hardware interrupt pin. It stays HIGH in standard conditions and drops LOW when fire is detected.
AO (Analog Output): Outputs a varying voltage signal ($0\text{V}$ to $\text{VCC}$) corresponding directly to the intensity of the flame. Connect this to an ADC pin to measure flame proximity.
Common Applications
Fire-Fighting Autonomous Robots: Mount the sensor on a mobile wheeled robot chassis to navigate towards flames and activate a mini water pump or $\text{CO}_2$ actuator.
Industrial Monitoring Control Panels: Deploy inside electrical distribution boxes or machinery enclosures to cut power networks instantly if internal spark ignitions occur.
Smart Home Security Systems: Link with GSM or Wi-Fi microcontrollers to push text notifications or sound local sirens during kitchen fire emergencies.
Boiler & Gas Burner Safety: Serves as a reliable electronic flame-out indicator to check if pilot lights on heating appliances are functioning safely.
Testing Safety Warning: When testing the module with a lighter or candle match, maintain a safe physical distance of at least 25–30 cm from the sensor tube. Direct contact with extreme heat will melt the plastic infrared lens casing and destroy the internal photodiodes.
Package Includes:
1 x Muonix Flame Sensor Module (4-Pin Variant)