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Displays "0" or remains blank until gas is detected.
Vacuum the unit monthly to prevent dust buildup. Do not use cleaning sprays, solvents, or paints on the device. jkd-512com user manual
Replace the entire unit immediately if the "End of Life" signal occurs or if it fails a manual test. Displays "0" or remains blank until gas is detected
Drill holes 5.5cm apart for the wall plugs and secure the bracket with screws. Clip the alarm back into the bracket with a clockwise twist. Operation & Testing jkd-512com user manual
Twist the unit counter-clockwise to remove the mounting bracket.
If wall-mounted, place it 4 to 12 inches (10-30cm) below the ceiling.
Backlit LCD screen showing CO levels (000–999 ppm) and smoke concentration.
