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Cli-Mate Twin Controller 4+4 Amp
The Cli-Mate Twin-Controller TW-4 (4+4A) is a professional proportional fan and temperature controller that independently regulates the air inlet and outlet of your grow space for complete climate balance. With two minimum speed settings — one for intake and one for exhaust — and a separate negative pressure adjustment, you maintain perfectly balanced airflow even under varying temperatures. Stepless temperature control operates automatically via an external sensor. Simple knob-based calibration, wall-mountable via rear mounting plate, IP44 protection rated for humid grow environments. The Twin-Controller 4+4A is ideal for growers seeking precise, quiet climate control at professional automation levels for serious indoor cultivation.
Cli-Mate Twin-Controller 4+4A — Independent Inlet/Outlet Regulation for Perfect Balance
A well-ventilated grow space requires more than a simple on/off switch for your fan. The Cli-Mate Twin-Controller TW-4 (4+4A) delivers stepless proportional temperature regulation with separate control of air inlet and outlet, including adjustable minimum speed per channel and negative pressure control. Explore the complete range in our climate control category at plantandflower.be — built for growers targeting professional-grade ventilation management.
Two Channels, Fully Independent Control
The distinguishing feature of the Twin-Controller is independent regulation of intake and exhaust fans. For the intake fan, you set both minimum and maximum speed. For the exhaust, you set minimum speed — maximum is automatically 100% at peak demand. This creates the desired negative pressure in the grow space, containing odours and ensuring constant fresh air supply. All regulations operate steplessly and respond automatically to temperature measured via the external sensor, typically positioned at canopy height for representative readings from the active grow zone.
Technical Specifications and Build Quality
- Power: 4A + 4A (8A total) — ample capacity for most hobbyist setups with dual fan circuits.
- Temperature range: 5-55°C with 1°C switching differential per step for precise control.
- Power supply: 220/230V 50Hz — standard European mains, direct connection.
- Regulation: stepless proportional, automatic temperature-based.
- Sensor: external temperature sensor included for flexible placement.
- Mounting: wall-mountable via rear plate, compact 190×135×85 mm dimensions.
- Protection rating: IP44 — splash-resistant, rated for humid grow environments.
The robust build quality and proportional regulation technology distinguish the Twin-Controller from simple on/off thermostats. Where budget alternatives switch the fan abruptly (with thermal shocks and audible transitions as consequences), the Twin-Controller operates linearly: ventilation capacity increases progressively with temperature until the preset maximum speed is reached. This produces more stable tent climate, fewer audible transitions, and extended fan lifespan through elimination of repeated hard-start procedures.
Which Grower Benefits Most from the Twin-Controller?
The Twin-Controller 4+4A is ideal for growers seeking quiet, precise ventilation with independently adjustable channels. The dual-channel architecture is specifically engineered for setups combining a separate intake fan with a centrifugal exhaust extractor, or installations where two distinct grow tents share a common regulator for their separate fan circuits. The precise 1°C switching differential makes the device suited to critical temperature management during sensitive phases like late flowering, when small thermal deviations significantly impact flower quality and terpene profiles. To integrate humidity control as well, the Cli-Mate Twin-Controller HUMI offers the same ventilation control with added humidifier/dehumidifier connection. For smaller setups with a single fan, the Cli-Mate Fan-Controller is a simpler alternative. For an all-in-one controller including lighting switching, see the Cli-Mate Mini-Controller HUMI.
Order your Cli-Mate Twin-Controller 4+4A at Plant and Flower with fast shipping across Belgium. The professional upgrade for growers ready to take ventilation management to the next level.
What is the difference between the Cli-Mate Twin-Controller and Fan-Controller?
The Fan-Controller regulates a single fan in two steps based on temperature. The Twin-Controller regulates two fans — intake and exhaust — fully independently and steplessly. It also offers a negative pressure setting to fine-tune the balance between intake and exhaust. This makes it suitable for precise climate control, particularly in larger tents where passive air intake is no longer sufficient.
How does the negative pressure setting work?
The negative pressure setting determines the airflow differential between intake and exhaust. By running the exhaust slightly faster than the intake, you create slight negative pressure in the grow space. This ensures air enters only through filtered openings, preventing odour leaks and improving air quality. A 10-20% negative pressure differential is a good starting value for most configurations.
Can I set intake and exhaust minimum speeds separately?
Yes. The Twin-Controller has two separate minimum speed controls: one for the intake fan and one for the exhaust fan. For the intake, you also set maximum speed. The exhaust always runs at 100% when maximum temperature activation triggers. This gives you complete control over the airflow profile in your grow space, including during dark periods when less ventilation is needed.
Is the Cli-Mate Twin-Controller 4+4A wall-mountable?
Yes. The Twin-Controller features a mounting plate on the rear side allowing easy wall attachment. Thanks to its compact 190×135×85 mm dimensions, it also fits in smaller technical spaces or alongside your grow tent. Preferably place the device outside the tent to avoid direct exposure to elevated humidity and temperature, even though the IP44 rating handles splash water.
