IR Flame Sensor Module (4-Pin)
The 4-Pin IR Flame Sensor Module is a high-sensitivity detector engineered to identify the presence of open flames by sensing the specific infrared (IR) light they emit (in the 760nm–1100nm spectrum). This versatile module is an indispensable tool for safety, robotics, and automation projects, offering both simple digital and proportional analog outputs for easy integration with microcontrollers like Arduino, Raspberry Pi, and ESP32. An onboard potentiometer allows users to easily adjust the detection sensitivity.
Technical Specifications
| Specification | Detail |
| Sensor Type | IR Phototransistor (Sensitive to flame-emitted IR) |
| Detection Wavelength | 760nm – 1100nm |
| Operating Voltage (VCC) | 3.3V – 5V DC |
| Output Type | Digital (DO) and Analog (AO) |
| Detection Distance | Up to 100 cm (dependent on flame size) |
| Detection Angle | Approximately 60° |
| Sensitivity | Adjustable via onboard Potentiometer |
| Comparator Chip | LM393 (Typically) |
| Pin Configuration | VCC, GND, DO, AO |






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