{"product_id":"gas-to-rj11-adaptor-ec-fan-controller-australia","title":"GAS to RJ11 Adaptor | EC Fan Controller Compatibility Interface for Grow Room Ventilation","description":"\u003ch2\u003eThe Missing Link Between Your GAS Controller and EC Fan.\u003c\/h2\u003e\u003cp\u003eThe GAS to RJ11 Adaptor is a precision signal interface engineered by Global Air Supplies to enable full control of EC (electronically commutated) inline fans via compatible GAS climate and fan controllers. It converts the stereo jack control signal output from GAS controllers to RJ11 protocol, allowing seamless communication between your controller and any EC fan that uses an RJ11 input. Without this adaptor, many EC fans cannot receive control signals from GAS controllers at all, meaning fan speed modulation, temperature response, and environmental automation are unavailable regardless of which controller you are running.\u003c\/p\u003e\u003cp\u003eIf you are building or upgrading a controlled grow room ventilation system using GAS controllers and RJ11-input EC fans, this adaptor is the component that makes the system work as intended. Small footprint, plug and play connection, and stable signal transmission across the full operating range of your fan.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Conversion.\u003c\/strong\u003e Converts stereo jack control signal to RJ11 output, enabling direct communication between GAS controllers and RJ11-input EC fans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Fan Compatibility.\u003c\/strong\u003e Unlocks full speed modulation and environmental response on RJ11 EC fans that cannot accept a direct stereo jack input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug and Play Integration.\u003c\/strong\u003e Simple inline connection. No wiring, no tools, no configuration required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable Signal Transmission.\u003c\/strong\u003e Maintains accurate, consistent fan response across the full speed range for precise environmental control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design.\u003c\/strong\u003e Minimal footprint within your system. Sits cleanly between controller and fan without adding bulk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Expansion.\u003c\/strong\u003e Enables full controller-to-fan integration in setups where direct connection is not possible without signal conversion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEssential Accessory.\u003c\/strong\u003e Required for certain EC fan and GAS controller combinations. Confirms full system functionality before you need it.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003cp\u003eGAS controllers output a stereo jack control signal to regulate EC fan speed. Many EC fans, including models from Systemair, use an RJ11 input rather than a stereo jack. The GAS to RJ11 Adaptor sits between the controller and the fan, converting the stereo signal to RJ11 protocol so the fan can receive and act on speed commands from the controller. The signal conversion is stable and accurate across the full operating range, ensuring the fan responds correctly to temperature changes, speed adjustments, and environmental triggers from your controller. The result is a fully integrated ventilation system where your controller and fan communicate as intended.\u003c\/p\u003e\u003ch3\u003eSystem Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction.\u003c\/strong\u003e Stereo jack to RJ11 signal conversion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Controllers.\u003c\/strong\u003e GAS Enviro, GAS Enviro V2, GAS EC5, GAS Enviro 4, GAS EC2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Fans.\u003c\/strong\u003e RJ11-input EC fans including Systemair EC fan ranges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type.\u003c\/strong\u003e Stereo jack input, RJ11 output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation.\u003c\/strong\u003e Plug and play, inline connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Stability.\u003c\/strong\u003e Accurate fan modulation across full speed range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer.\u003c\/strong\u003e GAS (Global Air Supplies).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRJ11 Adaptor for EC Fan Controller.\u003c\/strong\u003e The essential interface for connecting GAS controllers to RJ11-input EC fans in grow room ventilation systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGAS Controller to EC Fan Integration.\u003c\/strong\u003e Enables full speed control, temperature response, and environmental automation between GAS controllers and compatible EC fans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydroponic Fan Control System Completion.\u003c\/strong\u003e The final component in a complete controller-to-fan setup for automated hydroponic grow room ventilation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrow Room EC Fan Wiring Solution.\u003c\/strong\u003e Solves the compatibility gap between stereo jack controller outputs and RJ11 fan inputs without custom wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystemair EC Fan Compatibility.\u003c\/strong\u003e Works with Systemair EC fan ranges that use RJ11 inputs, enabling GAS controller integration across the Systemair lineup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVentilation System Signal Conversion.\u003c\/strong\u003e Suitable for any setup where a GAS controller needs to communicate with an RJ11-input EC fan.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat Sets It Apart\u003c\/h3\u003e\u003cp\u003eThis is a precision accessory, not a generic cable. The GAS to RJ11 Adaptor is engineered specifically for the signal requirements of GAS controllers and RJ11 EC fans, ensuring stable, accurate communication across the full operating range. A generic stereo to RJ11 cable may not maintain signal integrity at the voltage and frequency levels used by EC fan control systems, leading to erratic fan behaviour or no response at all. The GAS adaptor is the confirmed, compatible solution for the controller and fan combinations it is designed to support.\u003c\/p\u003e\u003ch3\u003eComplete Your Ventilation Control System\u003c\/h3\u003e\u003cp\u003eThe GAS to RJ11 Adaptor is one component in a complete EC fan control system. Here is how a full setup comes together:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 1: EC Fan.\u003c\/strong\u003e A Systemair EC inline fan with RJ11 input, such as the Revolution EC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 2: Controller.\u003c\/strong\u003e A GAS fan controller with stereo jack output. The \u003ca href=\"\/products\/gas-ec5-fan-controller-australia\"\u003eGAS EC5 Fan Controller\u003c\/a\u003e is the purpose-built option for EC fans, featuring Reactive Temperature Technology, integrated fan balancing, and negative pressure control with no power pack required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 3: Adaptor.\u003c\/strong\u003e The GAS to RJ11 Adaptor connects the two, converting the controller signal to RJ11 protocol so the fan receives and responds to speed commands accurately.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTogether, these three components form a complete, automated EC ventilation system for your grow room.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction.\u003c\/strong\u003e Stereo jack to RJ11 signal conversion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput.\u003c\/strong\u003e Stereo jack (GAS controller output)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput.\u003c\/strong\u003e RJ11 (EC fan input)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Controllers.\u003c\/strong\u003e GAS Enviro, Enviro V2, EC5, Enviro 4, EC2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Fans.\u003c\/strong\u003e RJ11-input EC fans including Systemair EC range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation.\u003c\/strong\u003e Plug and play, inline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer.\u003c\/strong\u003e GAS (Global Air Supplies)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat fans is GAS to RJ11 Adaptor compatible with?\u003c\/h3\u003e\n\u003cp\u003eGAS to RJ11 Adaptor is designed to work with compatible inline fans. EC controllers require EC-motor fans for full variable-speed control — they are not compatible with standard AC-motor fans. AC fan controllers work with standard single-phase AC fans. Check the compatibility list for your specific fan model before purchasing GAS to RJ11 Adaptor if you are retrofitting to an existing setup.\u003c\/p\u003e\n\u003ch3\u003eHow does GAS to RJ11 Adaptor automate my grow room climate?\u003c\/h3\u003e\n\u003cp\u003eGAS to RJ11 Adaptor monitors temperature and\/or humidity via its onboard or external probe and automatically adjusts fan speed to maintain your target setpoints. When temperature rises above your target, fan speed increases to extract warm air. When temperature drops, fan speed reduces to conserve heat. This removes the need for manual fan adjustments and keeps your grow room dialled in 24\/7.\u003c\/p\u003e\n\u003ch3\u003eCan I use GAS to RJ11 Adaptor with both my intake and exhaust fans?\u003c\/h3\u003e\n\u003cp\u003eMost fan controllers including GAS to RJ11 Adaptor are designed to control your primary exhaust fan. Some models include dual-channel control for both intake and exhaust. Check the number of output channels and maximum load rating before connecting multiple fans — never exceed the controller's maximum amperage rating.\u003c\/p\u003e\n\u003ch3\u003eDoes GAS to RJ11 Adaptor ship fast within Australia?\u003c\/h3\u003e\n\u003cp\u003eYes — GAS to RJ11 Adaptor ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.\u003c\/p\u003e","brand":"GAS","offers":[{"title":"Default Title","offer_id":43209972514879,"sku":null,"price":14.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/6898\/8479\/files\/CECA-GAS-RJ-11-Adapter_1000x1000_Grey.png?v=1777780129","url":"https:\/\/apexgrow.com.au\/products\/gas-to-rj11-adaptor-ec-fan-controller-australia","provider":"Apex Grow","version":"1.0","type":"link"}