| CO concentration | Alarm activation time (EN50291 standard) | |-----------------|------------------------------------------| | 50 PPM | Within 60–90 minutes | | 100 PPM | Within 10–40 minutes | | 300 PPM | Within 3 minutes | | Over 300 PPM | Immediate alarm |
Press and hold SET for 3 seconds, or wait 10 seconds for the system to auto-save and reset. Primary Function Codes P01: Operating Mode Selection
Features a micro-USB or specialized pin port reserved for factory diagnostic firmware updates. 3. Installation and Safety Guidelines
A: Standard alkaline AA batteries are recommended. Rechargeable NiMH batteries typically operate at lower voltage (1.2V vs. 1.5V) and may cause unreliable performance or false low-battery warnings. jkd-512com user manual
Correct placement is essential to prevent false alarms and guarantee life-saving alerts. Smoke floats upward, while carbon monoxide mixes evenly with room air, making the ideal approach. Recommended Locations
Press and hold the SET button for 3 seconds until the display flashes a menu code (e.g., P-01 ).
≥ 85 decibels (dB) at a distance of 3 meters (10 feet). Operating Temperature: 0°C to 50°C (32°F to 122°F). | CO concentration | Alarm activation time (EN50291
Mount the device 1 to 3 meters away from fuel-burning appliances (boilers, water heaters, stoves). Height Requirements:
Connect the included adapter to the JKD-512COM and a surge-protected outlet. The green PWR LED should illuminate solid. If it blinks, check voltage (must be >9V).
Regular maintenance prevents sensor drift, extends the lifespan of the device, and keeps the unit working through power outages. Installation and Safety Guidelines A: Standard alkaline AA
Flashes once every 30 seconds to indicate the unit is powered and operating normally. Carbon Monoxide Alarm Condition
Reliability begins with proper placement. If your JKD-512COM is a safety sensor, it should be installed at eye level or higher, away from dead-air spaces (like the very corner of a ceiling) and at least five feet away from fuel-burning appliances to avoid "nuisance alarms."