
The 900A integrates the intelligent ventilation system controller of CO2,temperature, humidity. The output signal of the controller directly controls the start and speed of the fresh air blower, and the design of high-sensitivity touch buttons. Built-in RS485 module, remote access and control, communication with smart home, building intelligent control, etc., through the relay to control the start and stop of the output AC fan and valve; Optional (output 0-10V proportional control) (support Valves or fans or other proportional equipment).
Can be widely used in residential, commercial and industrial applications to effectively improve air quality and create a healthy, comfortable and energy-saving living and working environment
Feature
CO2,sensor control output
Operation mode: Automatic-manual-timing
Fan speed mode: high, medium, low, automatic fan speed/0-10V proportional fan (valve) output
Regularly output different fan speeds every week
Timed off/on
RS485 communication
Restore battery memory function
Fresh air system filter alarm
Screen power saving mode switch
temperature display
Humidity display
Time display
Manual or automatic control of bypass valve
Output AC fan switch control (optional): high, medium and low output
Output DC fan 0-10V control (optional): 0-10V proportional fan (valve) output
Parameter
Project |
ProjectUnit |
Parameter value |
CO2 Adjustment range |
PPM |
350~1500 |
CO2 Display range |
PPM |
350~1999 |
Sensor warm-up time |
min |
2 |
Response time |
s |
≤10 |
Temperature display range |
℃ |
0~99 |
Humidity display range |
%RH |
5~90 |
Control power: |
W |
≤200 |
Rated Power |
W |
<2 |
Output Interface |
Speed fan |
AC output 3 Speed,DC 0-10V Proportional signal Optional |
Dimensions |
MM |
88×88×15mm/L×H×D |
Wirings |
MM2 |
2 x 1.5 or 1 x 2.5 |
Install hole spacing |
MM/In |
60±5MM/2.36±0.2In |
Protection Class |
IP |
30 |
Flame retardant rating |
Level |
V0 |

Product wiring diagram:
Size description:

Box mount:

Package list:
