Smart Fresh Air Ventilation System AC EC DC Fan Motors Controller
KF900A-S fresh air system intelligent controller can monitor indoor temperature and humidity, PM2.5, CO2 (optional), VOC (optional) and other data in real time; WIFI can be connected (optional);
With ModBus RTU (RS485) interface, users can connect to smart home and other background monitoring equipment status through ModBus interface; 0-10V voltage signal controls the start and speed of the fan.
The controller supports Wi-Fi connectivity and can be remotely monitored and controlled through the Smart Life App or Tuya Smart App, allowing users to manage their ventilation system anytime and anywhere. In addition, the built-in RS485 communication interface enables seamless integration with HVAC systems, building management systems (BMS), and smart building platforms.
- WiFi Smart Control
- App Remote Control
- Touchscreen Display
- Programmable Weekly Schedule
- Smart Home Integration
- IoT Enabled Controller
- Cloud Monitoring Support
| * Dimension: | 88 × 88 × 50 mm | * Warm-up time: | 1 minute | |
| * Fixing hole distance: | 60mm (standard) | * Response time: | ≤ 10 seconds | |
| * Wiring terminal: | Max 2.5 mm2 wire | * Recovery time: | ≤ 30 seconds | |
| * Rated voltage: | AC110-240V, 50/60Hz | * Operating temperature: | -10℃--- +50℃ | |
| * Standby Power: | ≤ 3.0W | * Operating humidity: | 5%RH——90%RH | |
| * Control power: | ≤ 200W | * Storage temperature: | -10℃--- +60℃ | |
| * Suitable for fans: | AC/EC/DC | * PM2.5 display range: | 0ug/m3——999ug/M3 | |
| * Temperature display range: | 0℃ —— 99℃ | * C02 display range: | 0ppm——9999ppm | |
| * Humidity display range: | 0%—99% |



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