User Manual

7
Table B: CO Alarm Response
Red Light
Horn/Sounder
CO Gas Level
0 ppm to < 50 ppm
OFF *
OFF*
>50 ppm
1 flash every 3 secs.
On within 60-240
minutes (typ 90 minutes)
>110 ppm
2 flashes every 3 secs.
On within 10-50 minutes
(typ 30 minutes)
>250 ppm
3 flashes every 3 secs.
On within 4-15 minutes
(typ 9 minutes)
* unless it has alarmed previously (see CO Alarm Memory below) ppm values shown in table are for example purposes only
Alarm Indicators
Pre-Alarm: Red LED flash only
CO Alarm: Red LED flash + sounder
Faults: Yellow LED flash + beeps