Jkd-512com User Manual ~upd~
Yes. Use RS-232 (via level shifter) or Ethernet Modbus TCP. Example Arduino library “JKD-512COM” is on GitHub.
Directly above a stove (steam and grease can trigger false alarms or clog sensors).
Behind curtains or in "dead air" spots where airflow is blocked. jkd-512com user manual
The sensor has expired or degraded. The device must be replaced immediately. Device chirps intermittently without an active alarm.
Regular maintenance prevents sensor drift, extends the lifespan of the device, and keeps the unit working through power outages. Directly above a stove (steam and grease can
If monitoring (lighter than air): Mount 0.3 to 1 meter below the ceiling.
Upon seeing or hearing any of these warnings, with fresh, high-quality alkaline batteries. The device must be replaced immediately
Carbon Monoxide (CO) and combustible gases (such as Liquefied Petroleum Gas/LPG, natural gas, methane, propane). Alarm Concentration: CO: 50ppm–300ppm (based on exposure duration). Combustible Gas: 1%–10% LEL (Lower Explosive Limit). Voice Prompt: Human voice alerts paired with a local siren. Alarm Decibel: ≥is greater than or equal to 85dB at a distance of 3 meters. Operating Temperature: 0°C to 50°C (32°F to 122°F). Relative Humidity: 10% to 95% R.H. 2. Display Indicators and Alarm Meanings
