EN2
B
– Case and buttons
B1
– “LIGHT (
)” button
B4
– “TIME (
)
” button
B2
– “-” button
B5
– DC power connection
B3
– “+” button
B6
– “ON/OFF” power switch
Main functions
Quartz clock
12/24 hour time display
Alarm with 5-minute snooze function
Display of indoor temperature in °C/°F and humidity
Display of CO2 concentration
MIN/MAX value memory for temperature, humidity and
CO2
Carbon dioxide (CO2) display as numbers and text
The 24-hour histogram of average CO2 concentration
Trend display of carbon dioxide concentration
CO2 concentration alarm function
Manual calibration for CO2 concentration and automatic
calibration of CO2 alarm
Four level backlight function (high-medium-low-off)
Low power indication and charging indication of built-in
lithium battery
