Backlit LCD screen showing CO levels (000–999 ppm) and smoke concentration.
If wall-mounted, place it 4 to 12 inches (10-30cm) below the ceiling. jkd-512com user manual
JKD-512COM is a 2-in-1 combination detector designed to monitor both carbon monoxide (CO) and smoke. While widely available on platforms like Amazon and Aliexpress, it is critical to note that major safety bodies, including the , have issued urgent warnings to stop using this specific model (manufactured by Shenzhen Jikaida Technology) because it may fail to alert users to fire or CO. Key Specifications Backlit LCD screen showing CO levels (000–999 ppm)
Due to reported failures in meeting UL 217 and EN 50291-1 standards, safety authorities recommend replacing the JKD-512COM safety authorities recommend replacing the JKD-512COM