HVC Smart EC Fan Controller PRO V2 front view with display and four buttons
HVC Smart EC Fan Controller PRO V2 angled side view
HVC Smart EC Fan Controller PRO V2 angled view from the other side
HVC Smart EC Fan Controller PRO V2 fan and sensor ports
HVC Smart EC Fan Controller PRO V2 retail box front
HVC Smart EC Fan Controller PRO V2 box back with spec label

Smart EC Fan Controller PRO V2 by HVC — Temperature & Humidity Control for Two EC Fans

HVC-CTRL-PRO-V2

Regular price$189.95
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Tax included. Shipping calculated at checkout.

Temperature and humidity controller for two Headwind HVC EC fans, with auto, timer and alarm modes, separate fan speeds and a 5m probe in the box.


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Running your fans flat out all day is loud, wasteful and lazy climate control. The HVC Smart EC Fan Controller PRO V2 reads temperature and humidity through a 5m probe and drives two Headwind HVC EC fans on their own channels, so you can set an intake and an exhaust at different speeds, trigger them on heat or humidity, run a timer, or get an alarm when the room drifts. It is powered straight from your HVC fan, so there is no extra power point to find. Built for growers running one tent or a small room with HVC EC fans. The honest bits: it controls two fans, not four, and it only works with Headwind HVC EC fans.

Two Fans, Two SpeedsSeparate channels for Fan 1 and Fan 2. Run them together, on their own, or together at different speeds so your exhaust always outpulls your intake.
Triggers on Heat and HumiditySet high and low triggers for temperature (0–65°C) and humidity (0–99%). Cross a trigger and the fans jump to the speed you set.
Alarms That Tell You Which FanHigh and low temperature and humidity alarms, plus fault detection on each channel that flags exactly which fan has stopped.
No Extra Power PointRuns on 10V supplied by your HVC EC fan. A 12V DC supply also works if you would rather power it separately.
Five ModesManual (11 speed levels), Off, Timer (up to 9 hours), Auto triggers and Alarm, all from four buttons on the front.
Screen Off for Lights OffEnergy Saving mode turns the display off while the controller keeps running, and the backlight dims to 30% on its own after 30 seconds.

Specifications

Brand: Headwind HVC (Hydroponic Ventilation Control)
Model: Smart EC Fan Controller PRO V2 (HF code 9044)
Fan channels: 2 (Fan 1 and Fan 2), 3.5mm ports
Compatible fans: Headwind HVC EC fans only
Sensor: Temperature and humidity probe on a 5m cable, 3.5mm port
Modes: Manual, Off, Timer, Auto trigger, Alarm
Manual speed levels: 11 (0–10)
Timer range: Up to 9 hours
Temperature trigger and alarm range: 0–65°C (32–140°F)
Humidity trigger and alarm range: 0–99%
Calibration: Temperature ±9°C, humidity ±20%
Power: 10V from the HVC fan, or 12V DC supply
Power draw: 3W
Display: 3.6" TFT, °C or °F, adjustable backlight
Dimensions: 133 x 75 x 25mm
Other features: Child lock, per-fan fault detection, key sound on/off, factory reset
In the box: Controller, 5m sensor cable, sensor hood, mounting screws
Warranty: 12 months
Made in: China, distributed in Australia by Holland Forge

Grower's Tip

  • Mount the controller outside the tent and run the 5m probe in. Headwind says to keep the unit itself out of hot, humid spaces, and it keeps the screen out of your dark period.
  • If the controller has to live inside the grow space, switch on Energy Saving before lights-off so the screen goes dark.
  • Put your exhaust on Fan 2 and intake on Fan 1. In the settings, Fan 1 runs a couple of levels below Fan 2 by default, which keeps the tent under slight negative pressure.
  • Hang the probe at canopy height and fit the supplied hood so the lights do not cook the reading.
  • Check the power setting matches how you power it: 10V from the fan is the default, 12V if you use a separate supply. The wrong setting can damage the controller or the fan.
  • Turn on fault detection for the channels you use. A fan that dies overnight is far cheaper to catch at 2am than at 8am.

How To Set It Up

1Drill two holes 83mm apart, screw the mounting plate to the wall, leaving the screws about 5mm proud, then hang the controller on the plate.
2With the fans unplugged from power, connect your HVC EC fans to the Fan 1 and Fan 2 ports and the probe to the sensor port. Never plug or unplug leads while a fan is powered.
3Fit the hood over the probe, hang it at canopy height and power up the fans.
4Hold MODE to open the settings. Set the working state (one fan, two fans together, or two fans at separate speeds), the power supply mode and fault detection, then press Energy Saving to save.
5Press MODE to pick Manual, Timer, Auto or Alarm, set your values with the arrows, and watch the live readings settle where you want them.

Pairs Well With

Frequently Asked Questions

How many fans can the PRO V2 run?

Two. It has two fan channels, so it suits one intake and one exhaust, or two exhausts. If you need to run more fans from one unit, the HVC Smart Speed Controller handles up to four.

Does it work with other brands of EC fan?

No. It is built for Headwind HVC EC fans, which power it and take its 3.5mm control connection.

Can the two fans run at different speeds?

Yes. Set the working state to separate control and each channel gets its own speed, so an intake can sit below the exhaust and keep slight negative pressure in the tent.

Does it need its own power point?

No. By default it runs on 10V supplied through your HVC fan. You can power it from a 12V DC supply instead, as long as you change the power setting to match.

Will the screen light up my tent during the dark period?

It can if the controller is inside. The best fix is mounting it outside the tent and running the 5m probe in. If it has to be inside, Energy Saving mode turns the screen off while the controller keeps working.

Will it tell me if a fan fails?

Yes. Turn on fault detection for the channels you use and the screen flags which fan has a problem, with an alarm sound.

Can I calibrate the probe?

Yes. Temperature can be offset by up to ±9°C and humidity by up to ±20%, so you can match it to a reference hygrometer.

Is there a warranty?

Yes. Headwind covers the PRO V2 for 12 months against defects in materials and workmanship. It does not cover water damage, wrong voltage or misuse.

Two Fans, One Brain

Temperature and humidity control for your HVC EC fans. Free shipping over $499*.

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