Product Overview

This 4-pin flame detection module is designed for high-sensitivity fire detection in the near-infrared spectrum (760-1100 nm). Its adjustable sensitivity and digital output make it an ideal choice for early warning systems.

Key Features & Specifications

• Spectral Sensitivity: Detects flame and light sources within the near-infrared range of 760 nm to 1100 nm.
• Detection Performance:

1. Typical Range: Up to 80 cm from a standard lighter flame. Detection distance increases with flame size.
2. Field of View: Approx. 60-degree detection cone, highly sensitive to flame spectrum.

• Output & Control:

1. Provides a clean digital switch output (High/Low, 0/1) via an onboard LM393 comparator.
2. Features strong drive capability (>15 mA).
3. Sensitivity is easily adjustable via a blue digital potentiometer.

• Physical Design:

1. Includes a mounting hole for easy installation.
2. Module PCB Size: 3.2 cm x 1.4 cm (1.26" x 0.55").

• Electrical Specifications:

1. Operating Voltage: 3.3V – 5V DC.
2. Interface: TTL-level Digital Output (DO).

Application & Usage Instructions

• Purpose: Primarily used for fire alarm systems. It is most sensitive to flames but will also respond to bright ordinary light sources.
• Connection: The DO pin can be directly connected to a microcontroller's digital I/O pin.
• Installation Caution: Maintain a safe distance between the sensor and high-temperature flames to prevent damage. The recommended minimum test distance is 80 cm from a lighter flame.

Package Information

• Package Dimensions: 80 mm x 60 mm x 5 mm (3.15" x 2.36" x 0.20")
• Shipping Weight: 2 grams

Note

• Allow a measurement tolerance of 1-3 cm due to manual measurement.
• Use as directed for optimal performance and sensor longevity.