EL2 has 2 output channels and additional outputs for External Contactor Modules and alarm contacts. If you require switched auxiliary equipment during lights on / off, alarm contacts and/or a 2 room 12/12 setup, the EL2 is most suitable.

If you require switched auxiliary equipment during lights on / off, alarm contacts and/or a 2 room 12/12 setup, the Gavita Master Controller EL2 is most suitable.

Lighting control at your fingertips! The Master controller EL1 and EL2 Gen 2 are our entry-level systems for centrally controlling large rooms with e-series fixtures. The second generation of Master controllers features improved and expanded functionality that raises the bar including non-volatile memory, event logging, independent sunrise and sunset settings and independent light cycles on the EL2. The EL1 has one lighting control channel and the EL2has two lighting control channels. The EL1 can control 500 max repeater bus fixtures and 40 max single bus fixtures without a booster. The EL2 can control1000 max repeater bus fixtures and 80 max single bus fixtures without a booster.

Gen 2 improvements

Memory – All master controllers use dependable, non-volatile memory to store user settings.

Logging – All master controllers now have logging functions for high/low temperature, last auto-dim event, last shutdown event and last power loss, including the event’s date and time

Separate sunrise/sunset control – Set different periods for sunrise and sunset

Independent cycles on EL2 models – These cycles let you program two different, overlapping cycles (for example, a 12/12 on channel 1 and an 18/6 on channel2).

Independent programmable External Contactor Modules (ECMs) – In Gen 2 EL2controllers, now you can choose whether they switch on or off and which channel they follow. The results? Flexible integration and automation.


Dimmable electronic ballasts have been around for many years now. They offer flexibility when you need lower light intensities, for example during the vegetative phase or when climate conditions are so extreme that a healthy climate is hard to maintain. Moreover, they can be boosted to optimize lamp performance and efficacy. Unfortunately, it is not always easy to adjust multiple ballasts or be there at the right moment when you need to dim your lights. Another problem is the high current that ballasts require when switched on at the same time (the inrush current). You need elaborate contactor equipped switchboxes to switch your ballasts on and off.

The Gavita Master controllers (in combination with suitable Gavita e-series ballasts, or Gavita Pro Complete Fixtures) offer a solution for all these issues, even with a cost reduction when you look at larger climate rooms. Our e-series ballasts no longer require a switchboard to be switched on and off, and no longer need their own switch to dim or boost them. Now you can just touch a few buttons on your controller to be in complete control of all your connected ballasts at once. Our Master controllers do this, and much more!

Available models

The Gavita EL controller series currently comprises of two models: The EL1 and EL2.Both feature auto-dim, auto-shutdown, sunrise/sunset and timer. The EL1 has one output channel, while the EL2 has 2 output channels and additional outputs for External Contactor Modules and alarm contacts. For one room without auxiliary equipment or alarm contacts, the EL1 is the best choice for you. If you require switched auxiliary equipment during lights on / off, alarm contacts and/or a 2room 12/12 setup, the EL2 is most suitable.


Functionality Overview

Easy Installation
Installing the Master Controller is a breeze: it's a matter of plugging in, setting the dials of the ballasts to EXT(External control) and looping the low voltage control cord from the controller to your ballasts - all plug and play. Easy, safe and flexible.

Clear Interface
The five language interface is intuitive to use with just 5 buttons. In plain text you see all settings, warnings and statuses. For an easy overview we have added LEDs for each output channel, which indicate whether the lights are on, dimming or shut down due to a dangerous high temperature. The indication LEDs are supported by a full text warning on the high quality green OLED display.

Replaces timers and contactors

You can plug your ballasts directly into mains outlets. You do not need any timers or contactor boxes any more: the ballasts are in stand-by mode and wake up when they get the signal from the controller. This means that you don't have any inrush any more when you switch on your ballasts. Just set the on/off time on the controller and you are good to go.

Dimming and boosting 
Once you have connected your ballasts to the controller and set the on/off time you can set the output power centrally by the push of a few buttons. You can choose to have the output power displayed as a percentage or in actual output wattage of your ballasts. We even offer you a sunrise/sunset time setting in which the lamps ramp up or down at the start and end of the cycle. Auto dim and safety shutdown based on room temperature. The Master controller is equipped with temperature sensors. Though we do not intend for you to use the Master controller as a climate controller, it can help you save your crop when temperatures in your room rise beyond your climate control capabilities. At a set temperature (normally a few degrees above your set ideal climate temperature) the Master controller will automatically dim your lamps, to prevent crop damage. In case of a complete ventilation failure or other calamity, when temperatures rise even more, the Master controller shuts down all connected equipment and activates the alarm contact.

Controller Specifications

24 Hour Timer (on/off)
Set Ouput level: 50-115%
Select Ballast Type: 400/600/750/1000W
Show Ouput as W or %
Auto-dim at set temp
Auto shutdown at Set Temp
Sunrise / Sunset period
Outputs: 2 (main/aux)
Temperature Sensors: 2 (for two rooms 12/12)
# of Ballasts per output: 40
Total number of ballasts: 80 either in one room or 2x40 in 12/12
Warranty: 3 years
External Contactor Modules (ECM) will work with this (sold separately)

ECM Specifications

Voltage: 120-240V
Current: 15A AC3
Switch Type: DPST (Double pole, single throw)
AC terminals: Male and Female plug (depending on market and voltage), 40 cm / 1'4" cords
Steering Input: Low voltage from controller, cage clamps
On-indication: Blue LED

Free Shipping rates apply to the lower 48 contiguous states. Contact Us to get shipping cost to your area if not in the lower 48 states before purchase.

We ship all items discreetly
Whether you are a novice gardener or a mad scientist in the greenhouse, you will find a plethora of inventory and knowledge at the Spokane Organic & Hydroponic Supply centers. Our first store opened its doors in 2006 when Paul and mother Susan, both avid and life-long gardeners, joined together to share their passion and gardening experiences with the Spokane community. In 2010, Susan moved on to pursue other endeavors while Paul continued to expand the business.
Each of our two stores employ experienced staff members with traditional garden expertise and modern industry knowledge. With real-life experiences, our plant experts know the challenges of outdoor and year-round gardening and strive to help customers eliminate avoidable mistakes. Our alternative and earth friendly stores we have created will leave you with a sense of empowerment to develop your own efficient methods of growing and caring for plants. We look forward to your visit and hearing the plant stories you have to share with us!

We ship daily Monday - Friday. All orders will be shipped within 3 to 5 working days. Most will go within 24 hours. You will automatically receive a tracking # via email once we have shipped your order.
All domestic orders will be shipped by UPS, Fedex ground, USPS priority mail or USPS ground. If you need to use a special carrier i.e. PO BOX w/ USPS, please email us and let us know.
We will only ship to the address provided during payment.
We are not responsible for any packages that are lost or damaged if insurance is not purchased.
Shipping and handling rate is fixed and non-refundable.
Free Shipping rates apply to 48 contiguous United States.
Contact us for shipping cost to your area.
No returns
No returns are accepted on any nutrients and fertilizers
Be sure the item is what you want because of the no return policy 
Pictures may be different then product sold

We ship all items discreetly

Satisfaction :
Discreetly labeled, Professionally packaged, shipped as fast as possible with care read the feedback for proof. Our prices are competitive but the service is Priceless! We know how to ship liquids with no leaks and 100% satisfaction guaranteed.
Your satisfaction is very important to us! If you have any problem with your order, please do not leave negative comments.
Please Contact us ... we will help you out!
In the unlikely event that the item is sold out from our stock or on back order, we will contact you to see if you want to wait a few days or we will refund 100% of your money ? YOUR choice.

Occasionally items sell from our brick and mortar store front before we are able to pull down our listing or adjust quantities. We try our best to fulfill these orders in a timely manner if possible. These cases are very rare, we will let you know as soon as possible and refund your money.