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3. Switching on Your CO Alarm
NOTE: Your CO alarm must be installed by a competent person using the guidance that follows;
1. Remove the baeries from the pack and insert them into the baery compartment. Make
sure that you fit the baeries in accordance with the polarity markings (+ or -) within the
baery compartment. If correctly installed, the alarm will give a short beep.
2. Push the test buon. The alarm will beep once followed by 4 loud pulses, then a brief
pause and then 4 more pulses, ending with a single beep.
3. If you have a digital read-out alarm (model 5DCO) the LCD screen will show “---“ and then
“888” before seling at “0”
4. Check that the green LED flashes at 30 second intervals to show that the alarm has power.
This is easiest to see in a dark area, or with lights switched off.