: If gas concentration exceeds the threshold, the device triggers a loud beep and a flashing red ALARM light. The LED display shows numbers 1–9 or "A" to indicate rising concentration levels. 3. Installation Instructions Natural Gas Detector, Plug-in Propane Gas Detector Comoros
This is the section where most users get stuck. The Brj-502 Manual uses a block-based programming model reminiscent of older Japanese PLCs. Brj-502 Manual
: The device requires a 150–180 second (2–3 minute) warm-up period. : If gas concentration exceeds the threshold, the
Install the detector . Place it within a 1.5-meter radius of the gas source. For LPG/Propane (Heavier than air): Brj-502 Manual