1.3.1.2 LCD information
The LCD display can show CO concentration, battery level, fault
warning, end-of-life warning, power-up prompt and testing operation.
1.3.1.3 Power-up prompt
It indicates power-up.
1.3.1.4 Battery level
A) Enough
B) Normal
C) Low
D) Low battery warning will be made
1.3.1.5 CO concentration
The LCD display shows CO concentration in PPM.
When CO concentration is less than 10 PPM, it shows 0 PPM.
When CO concentration is more than 550 PPM, it shows “Hco”.