4. CO2 PPM Level Setpoint Ajustment
Factory setpoint is 1200 PPM, the CO2 sensor
sensing the CO2 PPM level. If the CO2 level is
lower than 1200 PPM, the controller will turn on
output relay to drive the CO2 device for enriching
the CO2 in the grow area. When the CO2 PPM
level exceeds setpoint plus deadband (50 PPM),
the controller will cut off the output. To adjust the
setpoint, press HOME button 3 times, the
Setpoint LED indicator will be blinking,
the LED will display the current setpoint. Press
UP or DOWN , all digits on the LED will
be blinking and then press UP or DOWN
button to increase or decrease the setpoint.
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