The 2025 Mars Hydro 4″ iFresh Inline Duct Fan delivers 205CFM airflow capacity, featuring an expansion port that enables app-based climate control when paired with the iFresh MarsPro Add-On Pack. This integration creates a fully automated ventilation system that intelligently monitors and optimizes your grow space environmental data.

If you've just received your 2025 iFresh Fan and iFresh MarsPro Add-On Pack, follow these steps to connect your fan to the network:

1. Power Up the Fan: Connect the fan to the power supply, then plug the iConnect USB into its port.
2. Connect the Knob Controller: At this point, plug the knob controller into the RJ interface.
3. Enter Network Mode: Rotate the knob controller three times or more continuously, with each rotation covering more than 50% of the scale. This will put the fan into pairing mode.
4. Connect to Network: Open the MarsPro app on your phone, then add the device and follow the instructions to connect the fan to your Wi-Fi network. If you need to reconnect your fan to a new Wi-Fi network, simply repeat the steps above.
5. Switch to Sensor: Once the fan is connected to the network, remove the knob controller from the RJ interface and insert the sensor to complete the network setup.

iFresh MarsPro Add-On Pack