The Grow Sensor PRO

Grow Sensor PRO is built for serious indoor growers who care about precision, quality and repeatability.

It’s right for you if:

• You want accurate, canopy and substrate-level data, not assumptions or averages
• You care about yield, product quality and consistency
• You value reliable, modern software that’s actually enjoyable to use
• You actively refine each cycle instead of repeating the same setup
• You’re passionate about your craft and make decisions based on data
  

It may not be the right fit if:

• You grow outdoors only
• You only need basic temperature and humidity monitoring
• You’re looking for the lowest-cost option
• You don’t plan to adjust your environment based on insights
  

Grow Sensor PRO isn’t a basic room monitor. It’s a full-system measurement tool designed for growers who want accurate data, dependable software, and repeatable results.

Grow Sensor PRO won’t improve yield or quality by itself, it gives you the visibility to make the changes that do.

By measuring light, climate, plant response, and root zone conditions together at canopy level, you can spot constraints that basic room sensors miss. That usually leads to a more stable environment, clearer crop steering decisions, and more consistent runs. 

In practice, growers tend to see the biggest gains from catching issues earlier, tightening VPD and irrigation strategy, and repeating what works with less guesswork. 

If you want to sanity-check the economics, our ROI calculator lets you model payback based on your canopy size and crop value. The examples on that page use a 30% yield uplift scenario to illustrate the upside, but you can plug in your own conservative assumptions too.

If you’re ordering from outside the UK, local duties or taxes may apply depending on your country.

To reduce the risk, we’ll cover up to £100 / $125 / €115 in import fees. If you’re charged, simply send us the receipt and we’ll refund you.

Estimated charges (as of 28 May 2025) are:

• Australia: ~AUD $75 (10% GST)
• Canada: CAD $80–130 (GST/HST + processing fee)
• European Union: €145–190 (VAT + handling fee)
• New Zealand: ~NZD $135 (GST + entry fee)
• United States: ~USD $75 (10% import tariff)
• United Kingdom: No additional charges. All taxes and duties are included in the listed price.
  

Import fees are typically collected by the courier before or at delivery.

No subscription is required to use Grow Sensor PRO or the mobile app. The app is free, and your data is stored indefinitely.

GrowOps is an optional paid desktop workspace for professional teams and larger operations, it adds collaboration and advanced workflows, and it runs on a subscription.

We stand behind the quality of Grow Sensor PRO.

• 2-year limited warranty: If your sensor has a defect in materials or workmanship under normal use within two years of purchase, we will repair or replace it at no charge.
  
• 60-day money-back guarantee: If you’re not satisfied within 60 days of receiving your product, contact us at hi@growsensor.co and we’ll arrange a full refund.

This warranty covers manufacturing defects only. It doesn’t cover damage caused by misuse, accidents, modifications, or environmental extremes. To request warranty support, just email us and we’ll walk you through the process.

For full details, see our complete warranty terms.

Currently we ship to the UK, EU, US, Aus and Canada. If you want a Grow Sensor and live outside of these areas, please contact us. We'll be adding more countries soon.

Yes. Every Grow Sensor PRO is tested and verified before shipping.

We test the assembled device end-to-end, not just the individual sensor components. Temperature and humidity are verified in a stable test chamber to confirm consistent readings under controlled conditions.

We also perform multi-point verification checks across key measurements, including temperature, humidity, PPFD and light spectrum. This helps confirm accuracy across a range, and catches outliers, drift, or assembly issues before dispatch.

Full accuracy specifications are listed on the product page. If you need documentation for compliance or internal QA, we can provide the calibration and test certificates for the sensors used inside Grow Sensor PRO on request.

Yea we do! Its a bit dry to read though:

This Limited Warranty applies to physical goods, and only for physical goods, purchased from Grow Sensors LTD (the "Physical Goods").

What does this limited warranty cover?

This Limited Warranty covers any defects in material or workmanship under normal use during the Warranty Period.

During the Warranty Period, Grow Sensors LTD  will repair or replace, at no charge, products or parts of a product that proves defective because of improper material or workmanship, under normal use and maintenance.

What will we do to correct problems?

Gros Sensors LTD will either repair the Product at no charge, using new or refurbished replacement parts or replace the product.

How long does the coverage last?

The Warranty Period for Physical Goods purchased from Grow Sensors LTD  is 2 years from the date of purchase.

A replacement Physical Good or part assumes the remaining warranty of the original Physical Good or 2 years from the date of replacement or repair, whichever is longer.

What does this limited warranty not cover?

This Limited Warranty does not cover any problem that is caused by:
● conditions, malfunctions or damage not resulting from defects in material or workmanship

What do you have to do?

To obtain warranty service, you must first contact us to determine the problem and the most appropriate solution for you.

Yes.

Right now, Grow Sensor works with Home Assistant, so you can use Grow Sensor readings to trigger automations in your grow (fans, dehumidifiers, heaters, CO₂, lighting, alerts, and more), using the devices you already run through HA.

If you’re building your own system, you can also access Grow Sensor data via our API, which lets you pipe readings into dashboards, controllers, or custom automation logic.

We’re also actively expanding native integrations. We plan to support more third-party control platforms, and we’re developing our own irrigation controller, which is coming soon.

You own your data, full stop.

We store it so the app can show your history, graphs, and alerts, but we do not sell it, and we do not share it with third parties for advertising.

From a security standpoint, we treat Grow Sensor data like any other customer account data:

• Encrypted in transit: data is sent over an encrypted connection when your sensor syncs.
• Encrypted at rest: stored data is encrypted on our servers.
• Account-based access: your grow data is tied to your account and isn’t publicly visible.
• You control sharing: if you choose to share screenshots, exports, or give access to someone else, that’s your decision.

If you ever want a copy of your data for your own systems, you can export it via our API (and more export options are on the roadmap).