VIVOSUN GrowHub E42A Controller - Automate Lights and Fans From One Hub
Best for: Growers running several VIVOSUN lights and fans who want them all scheduled and monitored from one controller instead of juggling separate timers.
Our thoughts
This is the hub that ties a VIVOSUN Smart Grow System together properly - lights on one connection type, fans on another, a sensor probe reading real conditions, all scheduled from a single app. It's worth knowing it's built around VIVOSUN's own connectors rather than generic plug sockets, so it suits growers building out the VIVOSUN ecosystem specifically rather than mixing in arbitrary third-party kit. Proper construction and control at a price that makes sense.
The VIVOSUN GrowHub E42A is an environmental controller built to automate an entire VIVOSUN Smart Grow System (SGS) setup from one hub rather than running separate timers on each piece of equipment. It connects lights via an RJ45 daisy-chain (up to 12 AeroLight fixtures) or RJ11 (up to 8 VS-series lights), and connects fans - such as AeroZesh inline fans or AeroWave clip-on fans - via Type-C ports, supporting up to 4 fans at once. A built-in and external temperature/humidity probe feeds live readings, including VPD, back to the controller and app.
Scheduling covers precise on/off timing, ramping, and climate-based triggers, so connected devices respond automatically to actual conditions rather than a fixed clock alone, and for EC-motor fans like AeroWave and AeroZesh it can also manage fan speed rather than just switching them on or off. The VIVOSUN app extends this to remote monitoring and adjustment from your phone, with smart auto-modes and pre-built grow recipes for different plant stages. The controller is expandable - link it with a GrowHub E25 as an expansion port for extra lights, or add further SGS devices, to bring more of your tent under one schedule.
How it compares
The E42A's closest direct comparison is AC Infinity's Controller 69 series, which occupies a similar all-in-one environmental controller space.
- AC Infinity's Controller 69 works as a universal hub for third-party AC-powered equipment via standard outlets, while the GrowHub E42A is built specifically around VIVOSUN's own RJ45/RJ11/Type-C connected lights and fans - a real difference if your setup mixes brands rather than staying within the VIVOSUN ecosystem
- Both offer app control, live temperature/humidity/VPD readouts, and expandability into a wider connected ecosystem
- The GrowHub E42A works out cheaper than building an equivalent multi-device AC Infinity setup, provided you're buying VIVOSUN's own lights and fans to go with it
If you want one hub to control mixed-brand equipment via standard outlets, AC Infinity's controller is built for that specifically - if you're already buying into VIVOSUN's lights and fans, the E42A ties them together for less.
Usage guidance
Setting up connections and triggers properly is what makes an environmental controller actually earn its keep.
Connecting lights
Use the RJ45 daisy-chain for AeroLight fixtures (up to 12) or RJ11 for VS-series lights (up to 8) - check which port your specific light model needs before wiring in.
Connecting fans
Plug compatible fans like AeroZesh inline fans or AeroWave clip-on fans into the Type-C ports (up to 4 fans), which also unlocks variable speed control for EC-motor models rather than simple on/off.
Setting climate triggers
Rather than relying purely on a clock schedule, set humidity, temperature, and VPD thresholds so connected fans respond automatically when conditions drift out of range.
Probe placement
Position the external sensor probe at canopy height, away from direct airflow from a fan, so readings reflect real plant-level conditions rather than a draught.
Expanding the system
Add a GrowHub E25 to extend light capacity, or connect other SGS devices, so more of your tent runs from the same schedule rather than separate app entries.
Technical specifications
- Light connections: RJ45 daisy-chain (up to 12 AeroLight fixtures) or RJ11 (up to 8 VS-series lights)
- Fan connections: Type-C (up to 4 fans, e.g. AeroZesh, AeroWave)
- Fan speed control: variable speed for compatible EC-motor fans, not just on/off
- Sensors: built-in and external temperature/humidity probe, VPD
- Display: built-in LED display
- Connectivity: WiFi via VIVOSUN app
- Scheduling: on/off timing, ramping, climate-based triggers, grow recipes
- Expandability: compatible with GrowHub E25 and other SGS devices
Who this is for
- Growers running several VIVOSUN AeroLight or VS-series lights who want one unified schedule
- Anyone using AeroZesh or AeroWave fans who wants variable speed control tied into climate triggers
- Growers who want live temperature/humidity/VPD readouts without buying a separate meter
- Anyone building out a full VIVOSUN Smart Grow System setup rather than mixing brands
Best suited to a tent or room already using, or planning to use, VIVOSUN's own connected lights and fans.
Our take
This covers the automation most VIVOSUN-equipped tents actually need - proper light and fan connectivity, real environmental readouts, and sensible scheduling logic across the whole SGS ecosystem. It's a straightforward step up from individual plug timers, provided your equipment is VIVOSUN's own.
Worth picking up if you're building a VIVOSUN setup and want it all running from one schedule.
