The Grow Sensor stands out because it offers a wider suite of sensors than any other product on the market. For example, it measures leaf surface temperature, enabling us to calculate leaf VPD (vapor pressure deficit)—a game-changer for optimizing plant health with pinpoint accuracy.
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Precision is everything, and the Grow Sensor leads the industry in accuracy. Every unit undergoes meticulous factory calibration before shipping, ensuring lab-grade precision straight out of the box. No guesswork, no need for manual adjustments—just reliable, high-accuracy data you can trust for every grow.
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Despite its compact size, the Grow Sensor is packed with cutting-edge technology, making it perfect for both small and large grows. It features a high-capacity battery, allowing for extended use without needing to be plugged in.
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The Grow Sensor is also directly compatible with some of the best soil probes available today, providing seamless integration and ultra-precise readings across multiple parameters.
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We are also the first grow company to actively connect with Home Assistant—giving growers unparalleled flexibility and control over their environment. (Currently in development.)
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Our user-friendly app is another game-changer. Unlike many competitors with clunky software, we’ve designed an intuitive, mobile-first interface that makes data analysis effortless—even for growers new to advanced monitoring.
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Lastly, the Grow Sensor is designed and manufactured in Europe, adhering to strict quality standards that set it apart from mass-produced alternatives.

Extreme accuracy is our standard—if it wasn’t, we wouldn’t launch the product.
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Most IoT sensors on the market today overpromise and underdeliver, collecting inaccurate data that can’t be trusted or acted on. We refuse to be part of that problem. The Grow Sensor is designed with one priority: delivering precision growers can rely on—always.
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We go to great lengths to ensure this. Every Grow Sensor undergoes strict factory calibration before it leaves us, guaranteeing that it meets our high standards. We use only top-tier sensor components, carefully tested to provide consistently accurate, real-world results. Unlike many competitors that pack in features at the cost of accuracy, we take a data-first approach—because bad data leads to bad decisions.
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Here’s the level of precision you can expect from the Grow Sensor:
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Environmental Accuracy:
‍ • Temperature: ±0.5°C (1°F) | Range: -9°C to 58°C (15.8°F to 136°F)
• Humidity: ±1.3% | Range: 10% to 95% RH
• Leaf Temperature: ±0.5°C (1°F) | Range: -30°C to 100°C (-22°F to 212°F)
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CO₂ Monitoring:
‍ • Measurement Range: 400 ppm to 5000 ppm
• Accuracy: ±40 ppm + 5%
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Light & Spectrum Accuracy:
‍ • DLI (Daily Light Integral): ±3%
• Spectral Sensor Wavelength Range: 380 to 910 nm
• ePPFD (ePAR) Range: 400 to 750 nm
• Blue Spectrum: 400 to 499 nm
• Green Spectrum: 500 to 599 nm
• Red Spectrum: 600 to 699 nm
• Infrared Spectrum: 700 to 799 nm
• Wavelength Accuracy: ±2 nm per channel
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We built this sensor for growers who need real, actionable data. Whether you’re dialling in climate conditions, managing CO₂, or optimising lighting, you can trust the Grow Sensor to deliver precision—every time.
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If you have specific questions, reach out to us at hi@growsensor.co.

Yes! The Grow Sensor is designed for real-time remote monitoring, so you’re always connected to your grow—no matter where you are.
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With Wi-Fi connectivity and our intuitive mobile app, you can track critical environmental data from anywhere. Whether you’re checking in from your IOS or Android phone the Grow Sensor keeps you informed with live updates and historical data trends.

No, the Grow Sensor works straight out of the box—no hub or extra equipment needed.
Unlike many other grow monitoring solutions that require additional hardware, the Grow Sensor connects directly to Wi-Fi, so you can start tracking your environment instantly with just your sensor and the Grow Sensor app.
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If you want to expand your setup, the Grow Sensor is compatible with some of the best soil probes on the market. To connect a soil probe, you may need our inexpensive soil probe adapter cable, which allows for seamless integration.
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Simply power it up, connect to Wi-Fi, and start monitoring—no complicated setup, no hidden extras.

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Setting up the Grow Sensor is quick and effortless—no technical expertise required.
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Power it up using the built-in battery or plug it in for continuous operation. Connect to Wi-Fi with a simple in-app setup. Position the sensor in your environment to start collecting accurate data. Start monitoring real-time data instantly in the Grow Sensor app.

The entire process takes just a few minutes, and our app guides you every step of the way. No hubs, no complicated wiring—just plug, connect, and grow.

Yes! Home Assistant integration is now available in the Grow Sensor app.
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You can now connect your Grow Sensor directly to Home Assistant for real-time data, automation, and full control over your grow environment.
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We’re excited to bring this feature to you—our aim is to build an open ecosystem that gives growers total flexibility and seamless integration.

Find out more about Home Assistant and the Grow Sensor PRO here.

Battery life depends on the mode you select:
• Standard mode (default): Lasts approximately 3 weeks on a single charge.
• Power-saving mode: Reduces the frequency of readings from power-hungry sensors, extending battery life up to 3 months.
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We’re also developing new power-saving modes to give users even more control over battery consumption. These updates are expected to roll out soon.

Your data is encrypted and securely stored, ensuring it remains private and protected.
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We never share or sell your information, and you have full control over your grow data at all times. Your privacy and security are our top priorities.

The Grow Sensor app is free to use with your device—there are no mandatory subscription fees.
In the future, we may introduce premium features, such as AI-driven insights, which could require a subscription. However, all core monitoring and data tracking features will remain free.

We currently ship to the UK, EU, US, and Canada.
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If you’re outside these regions and want a Grow Sensor, contact us—we’re actively working on expanding our shipping options and may be able to help. More countries will be added soon!

Import costs are estimated and may vary slightly depending on your country’s regulations and courier processing. All duties, taxes, and fees are typically collected by the courier prior to or at delivery.

Information correct as of 28th May 2025.
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‍Australia: AUD $75 - Includes 10% GST on the sensor price.
‍Canada: CAD $80–130 - Includes 5–15% GST/HST (varies by province) and a customs processing fee (~CAD $10–15).
‍European Union: €145–190 - Includes 20–25% VAT and a customs handling fee (€10–20), depending on your country.
‍New Zealand: ~NZD $135 - Includes 15% GST and an import entry fee (~NZD $60).
‍United States: ~$75 USD - Includes a 10% import tariff (as of 2025)
United Kingdom: None - All taxes and duties are included in the listed price. Nothing more to pay.

We offer a 365-day limited warranty on all Grow Sensors purchased directly from us.
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This warranty covers defects in materials or workmanship under normal use. If you believe your Grow Sensor is defective, contact us, and we’ll help diagnose the issue and find the best solution for you.
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To start a warranty claim, email us at support@growsensor.co.

Absolutely! We’re here to help with any questions you have about our products or your grow.
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Support is at the heart of building a strong community, and we’re passionate about providing the best experience possible. If you need assistance, don’t hesitate to reach out—we’re always happy to help!