Ei Electronics Ei207 Series Instructions For Use Manual page 9

* There are two variations of the LCD display as outlined in the tables below
Table B-1: CO Alarm Response - (version 1)
Red Light
(Pre Alarm)
CO Gas Level
Off*
0 < ppm < 10 ppm
10 < ppm < 30 ppm Off*
30 < ppm < 43 ppm Off*
1 flash
43 < ppm < 80 ppm
every 2 secs
2 flashes
80 < ppm < 150 ppm
every 2 secs
4 flashes
> 150 ppm
every 2 secs
* unless it has alarmed previously (see CO Alarm Memory below)
ppm values shown in table are for example purposes only
Display Icon Display Icon
(before horn sounds) (after horn sounds)
Blank Blank
PPM level (flash) PPM level (flash)
on - 4 seconds, on - 4 seconds,
off - 12 seconds off - 12 seconds
PPM level PPM level
Sounder
(Alarm)
Off
Off
Off
on within 60-90 mins
(typ 72 mins)
on within 10-40 mins
(typ 18 mins)
on within 2 mins
(typ 40 secs)
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