S600-ExIR1 point type infrared flame detector contains an infrared sensor and optical filter, the detector has the highest sensitivity to the CO2 emission spectrum generated by burning of hydrocarbons (4.4μm), combined with a logical integrated judgment of the flame flickering frequency when fire occurs, having a high immunity to the false alarms generated by the environmental infrared light source. S600-ExIR1 point type infrared flame detector contains an infrared sensor and optical filter, the detector has the highest sensitivity to the CO2 emission spectrum generated by burning of hydrocarbons (4.4μm), combined with a logical integrated judgment of Lɔnadɛ̈ ke kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye kɛnɛŋ ye k Detectors aye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye