G.A.S Enviro4 – All-in-One EC Fan & Climate Controller

The G.A.S Enviro4, developed by Global Air Supplies, brings EC fan speed control, temperature and humidity management, and timed equipment switching together in one digital controller. Four programmable sockets let you coordinate compatible heaters, humidifiers, dehumidifiers and lighting from a single point, simplifying your indoor growing setup.

EC Fan Speed Control

Automatically adjust compatible EC intake and extraction fan speeds in response to your growing environment. The built-in fan balancer helps coordinate intake and extraction, and the controller is designed to work with the Systemair Revolution EC fan range.

Compatibility listed for this controller includes Systemair EC fans and Rhino Ultra EC fans. Phresh Hyperfan V2 compatibility requires an additional cable. Check the correct fan connection and cable requirements before installation.

Temperature, Humidity & Day/Night Settings

The temperature and humidity sensor monitors conditions so the controller can respond to your programmed settings. Separate day and night settings allow different climate targets, including settings for heaters, humidifiers and dehumidifiers. The upgraded sensor probe connects through a socket on the outside of the unit, making replacement easier.

Four Programmable Equipment Sockets

Use the four fully programmable sockets to switch compatible environmental equipment and lights on and off using temperature, humidity or timer settings as appropriate. For example, a heater can be set to switch on when the temperature drops below your chosen level.

The Enviro4 supports a maximum total load of 26 amps, twice the stated capacity of the Enviro v2. Centralising control can reduce the need for separate controllers and help avoid conflicting equipment settings.

Electrical Load Limits

• Maximum total load: 26 amps across the controller.
• Maximum equipment load: 2,200 watts per socket, subject to the total controller limit.
• Grow-light load: do not exceed 2,400 watts across all four sockets, equivalent to four 600-watt lights, because of the high start-up surge.

Individual socket limits do not override the total load limit. Follow the Enviro4 Controller Instructions and the connected equipment's electrical requirements when planning and installing your setup.

Key Features

• Digital speed control for compatible EC fans.
• Temperature and humidity control.
• Four programmable sockets for compatible heaters, humidifiers, dehumidifiers, lights and timed equipment.
• Separate day and night settings.
• Built-in intake and extraction fan balancer.
• Replaceable sensor probe with an external connector socket.
• Dump feature for closed-loop growing environments.
• LCD display with straightforward navigation and setup.

Specifications

• Brand: G.A.S / Global Air Supplies.
• Model: Enviro4, also listed as Enviro Controller v4.
• Programmable sockets: 4.
• Maximum total current: 26 amps.
• Maximum load per socket: 2,200 watts.
• Maximum combined grow-light load: 2,400 watts.
• Power lead length: 1.2 metres.
• Probe length: 3.8 metres.
• Listed dimensions: 20 × 9cm.
• Fan compatibility: Systemair EC and Rhino Ultra EC fans; Phresh Hyperfan V2 with an additional cable.

Setup & Use

Position the sensor to monitor your growing environment, configure the required day and night parameters, and programme the sockets for your connected equipment. Refer to the Enviro4 Controller Instructions for the full setup procedure, fan balancing and closed-loop dump feature.