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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 correctly to the polarity markings (+ or -) shown within the
baery compartment. If correctly installed, the alarm will give a short beep.
2. To test the alarm, press 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 7DCO) 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.
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