: Periodically test the device to ensure the audible and visual alarms are functional.
(e.g., Natural Gas, Methane): Install 1–3.3 feet (0.3–1.0m) below the ceiling and within 5 feet of the gas source.
By consulting the BRJ-502 manual, you'll enjoy a range of benefits, including:
uses a numerical scale (typically 1–9) to represent gas concentration levels : Alarm Action No alarm; green power light stays on. 1 – 2 No audible alarm; standard monitoring. 3 – 5 Low Leakage Slow "Di... Di..." sound; STATE/ALARM lights flash red. 6 – 9 High Leakage Rapid "DiDiDi..." sound; STATE/ALARM lights flash quickly. A Dangerous Leak Over 9% LEL; fastest alarm sound and light flashing. 4. Emergency Procedures If the alarm sounds (levels 3 or higher):
: The detector will not sense gas until this period is complete.