Growlink - Crop Steering Simplified. Take your irrigation strategies to the next level with the Growlink precision irrigation controllers. Introducing the Growlink Precision Irrigation Controller, the perfect solution for climate monitoring and precision irrigation management. The controller features a worldwide universal plug, making it compatible with all countries. With 4 x 24VAC output channels for valve control and 4 x sensor inputs, you can easily connect the 3-In-1 Climate sensor with CO2 and Terralink substrate sensors for real-time monitoring and valve control.

PLEASE ALLOW 5-7 WORKING DAYS FOR DELIVERY. ANY QUESTIONS PLEASE CONTACT US.

Optimize your cultivation with precision: Introducing the ultimate automation in irrigation management. Our AI-driven crop steering program, a first in the market, empowers you to automate your irrigation effortlessly. Utilize sensor triggers, timers, and schedules to ensure your crops receive exactly what they need, when they need it. Elevate your agriculture technology and put your irrigation on autopilot. Experience unparalleled efficiency and productivity.

Crop Steering

Crop steering is an advanced technique that allows you to control plant growth and development by manipulating environmental factors such as irrigation, nutrition, and light. With Growlink AI Crop Steering, you can easily implement crop steering strategies that boost crop production, improve crop quality, and reduce resource waste.

Alarms and Alerts 

Growlink alarms and alerts notify operators of important events or conditions in the system. Alarms are used to indicate critical events that require immediate attention, while alerts are used to indicate less critical events that require attention but not necessarily immediate action. Growlink support push, text and email notifications.

Algorithm Library

Control Algorithms empower you to create customizable rule sequences that adapt to your plants' specific needs in real-time, reacting to changes in temperature, humidity, light, and more. By utilizing advanced algorithms, rules, and AI, you'll have the power to automate and fine-tune your greenhouse environment like never before.

Rules Engine

Growlink's rules engine offers a comprehensive solution for building automation system programming. Our Framework provides a unified, platform-independent environment for developing custom control applications that can be deployed across multiple hardware and software platforms. 

Data Visualisation

At its core, data visualization is about telling a story with data. By creating visual representations of data, patterns and trends can be identified, relationships can be established, and insights can be gained. 

Growlink is Always Getting Smarter

With OTA updates, your devices and software are constantly evolving and improving. Our team of experts are always working to identify and fix bugs, add new features, and optimize performance so you can get the most out of your technology.

ESM3 Climate Sensor (Temp, RH, VPD, C02) 

The ESM3 Eco climate sensor is designed for Growlink controllers that support SDI-12. This sensor includes air temperature, humidity, VPD and photocell with CO2. Support for multiple sensors give you the ability to be averaged or used as seperate sensors. Professional growers can rely on this sensor for accurate data and confidence in their growing environment.

Lifetime Support

Lifetime complimentary technical support (valid only if purchased from GROWLINK or an authorised reseller)

Features

• Easy Setup via the Growlink App
• Plug & Play
• Up to 4 Climate Sensors (Coming Soon)
• Up to 4 Terralink Sensors
• Works with Growlink CoPilot (subscription required)
• Remote Access
• Notifications and Alerts

Contents

•  1 x TERRALINK substrate sensor
• 1 x ESM3 Climate Sensor (Temp, RH, VPD), (optional) C02
• 1 x Precision Irrigation Controller (4 Irrigation Valve Outputs)
• 1 x 24 VDC Power Supply - Global Plug Types
• 1 x Mounting Bracket and Hardware
• 1x Terralink Sensor (VWC, EC, Temp)

Specifications

Precision Irrigation Controller
Compatible with Terralink, Teros 12 or Acclima TDR Sensors
4 zone base controller
Run up to 4 standard 24VAC solenoids at once
Unlimited sensor triggers, timers and schedules
Connects to the Growlink Cloud
Requires ethernet or wifi connection to internet

Terralink Sensor

Volumetric Water Content
Soilless Media Calibration: 0.0–1.0 m3/m3
Apparent Dielectric Permittivity: 1 (air) to 100 (water)
Accuracy: ± 0.02 for 0-53%; ± 0.04 for 53-100% in any porous medium
NOTE: The VWC range is dependent on the media the sensor is calibrated to. A custom calibration will accommodate the necessary ranges for most substrates

Temperature
Range: -40℃ - 85℃
Resolution: 0.10 °C
Accuracy: ±0.4 °C from −40 to 0 °C ±0.3 °C from 0 to +85 °C

Bulk Electrical Conductivity (EC)
Range: 0–20,000 μS/cm (bulk)
Resolution: 1 μS/cm
Accuracy: +/- (5% + 10 μS/cm) from 0–10,000 μS/cm
+/- 8% from 10,000–20,000 μS/cm

ESM3 Climate Sensor

CO₂
0…5000 ppm
Accuracy CO₂ - * mv – measured value
± (50 ppm + 2 % mv*)
± (50 ppm + 3 % mv*)
± (100 ppm + 5 % mv*)
± (1.5 % from full scale + 2 % mv*)
± (1.5 % from full scale + 2 % mv*)

Relative Humidity
0…100% RH (non condensing)
Accuracy Relative Humidity at 25 °C (77 °C) and 20...80% RH
typ. ± 3 % RH

Temperature
-40…60 °C (-40...140 °F)
Accuracy Temperature at 5…60 °C (41…140 °F)
typ. ± 0.5 °C (± 0.9 °F)

PLEASE NOTE THIS ITEM IS FOR THE GROWLINK CONTROLLER + 1x TERRALINK SENSOR + 1x NDIR C02 SENSOR. 

We offer the following shipping options to the mainland UK. If you live outside mainland UK please call us on +44 (0)1142 280024.

Delivery service options (mainland)

Free delivery up to 25 KG (Orders over £75) 1-2 day service 

Royal mail tracked 24 - £3.99 (up to 2KG only)

Royal mail tracked 48 - £3.29 (up to 2KG only)

Next working day - £6.75 up to 25KG (orders under £75)

Next working day - £9.95 Over 25KG (orders under £75)

Next working day - A.M. £10.95 Under 25KG

Next working day - A.M. £14.95 Over 25KG

Delivery service options (NI & highlands)

Express (2-4 Working Days): £29.95 

Parcelforce 48 (2-3 Working Days)

Bulky Goods 

Items that exceed 1m in length or are bulky in volume will incur a Bulky Goods surcharge (per item).

Bulky Goods Shipping Charges (excludes highlands):

Economy (3-5 Days) £8.95

Express (1-2 Days) £21.95

All orders are packed in plain discreet parcels with non descript labels for your personal security.

We offer the following shipping options to the mainland UK. If you live outside mainland UK please call us on +44 (0)1142 280024.

Royal Mail delivery options (mainland UK)

Royal mail tracked  £3.99 (up to 2KG only) 2-4 working days

Royal mail tracked  £3.29 (up to 2KG only) 3-5 working days

Courier  Delivery service options (mainland) Zone A Zone A+ Zone B Zone B+

Free delivery up to 25 kilos (over £75) 1-2 working days service 
Next working day  £6.75 up to 25KG 
Next working day am £9.95 over 25KG

Courier Delivery service options Zone C Zone C+ Zone D Zone D+

Next working day  £29.95 + 75P per kg over 25KG
Next working day am £35 + 75P per KG over 25KG

All packages are shipped in plain, discrete packaging. Absolutely NO information is passed to third parties.

Please note that paid for next day delivery only applies if you order before 1PM Monday to Thursday.

Our UK delivery zones: In the UK we have 4 zones. Prices and parcel delivery times vary by zone.


Tracking your consignments

Our deliveries are handled by Parcelforce or DHL PARCEL UK depending on the weight and location.You are able to track your parcels by using your consignment number or customer reference and postcode. If using a reference number to search, please also insert the delivery postcode.​ You will receive an email on the day for dispatch confirming your order and tracking number, with DHL PARCEL UK option you can select a delivery window or change the day of delivery by clicking the link below and manage my delivery option.


Other Services Available

Isle of Wight & isles of Scilly £5.99 extra per consignment

Timed booked delivery £15.99 extra per consignment

Long bulky items £29.99 extra per consignment (1.4m x 0.8m 0r two persons needs to carry )

We Won't Be Beaten On Price

At Hytec Horticulture we are committed to offering the best range of hydroponic products at the best possible prices. This is why we have our Price Match Promise, whereby if you find an identical product at one of our competitors for a lower price, we will match or even beat it.

In an ever-increasingly competitive marketplace, many product lines are being sold at varying prices. We want to give you the best deal so if you find any of the products we sell (or comparable products) at cheaper prices, give us a chance to get your business, save you money, and beat that price. 

Terms & Conditions

To qualify for the Price Match Promise, the product must conform to the following:

• The product in question must be identical (it should be the same brand & model and for sale with the same terms & conditions)
• The product must be held in stock by the competitor at the time you want to make the price match
• In addition to the above, we must also have the product in stock
• We must be able to verify the lower price either by the store's website, a phone call or a written quote on headed paper
• The product is not part of a promotion, sale or clearance offer
• The product must be available from a physical store that’s open to the public
• Our Price Match Promise is not available against web-only retailers, for example, eBay or Amazon, along with factory outlets, private or liquidation sales
• Typographical errors, incorrect pricing, voucher codes or additional discounts by the competitor, including their own price match offers, are excluded 

Large & Multiple Product Orders

If you want to place a large order with multiple products (for example, you're setting up a grow room from scratch and require a full setup including tent, lights, extraction, nutrients, grow media etc) then get in touch and we will aim to match, or even beat any quotes you’ve been given. 

Online Price Matching

Please fill out the form below with a link to the website and we will email back with our best price.