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Remote grow room monitoring
Meet the Grow Sensor
Powerful, packed with goodies and built to last. The Grow Sensor is the brain of your indoor cultivation operation.
Temperature and humidity
Optimise growing conditions with super accurate temperature and humidity monitoring.
CO2 sensor
Boost plant growth with CO2 grow room monitoring. Ideal for plant and mushroom cultivation.
ePPFD light meter
Measure your light intensity continuously with the top-mounted extended PPF/PPFD sensor.
Extended spectrum ePAR sensor
Bring out the best in your plants. View the latest ePAR spectrum - 350 to 900nm. With no missing bands.
LST sensor
Grow healthy plants. Measure leaf surface temperature continuously with the bottom-mounted infrared sensor.
Links up with substrate probe
Compatible with a range of top substrate probes. Measure EC, water content, dry backs and temperature.
Super high accuracy
All of our sensors have been chosen to be highly accurate whilst also extending battery life.
Innovative aerated case
Designed to passively move air and give the most accurate indoor readings.
Long battery life
Choose what you you want to measure, when. Save power, extend battery life.
Home Assitant compatible
Use your Grow sensor with home assitant (in development and coming soon.)
Measure VPD
Grow the healthiest plants possible. Measure vapour pressure deficit out of the box.
Measure leaf VPD
Get a highly accurate VPD reading using the temperature of the plants leaves.
Measure dew point
Prevent condensation and mould growth. Measure dew point and get notifications.
Measure eDLI
Save on electricity by measuring your daily light integral using the latest extended eDLI calculation.
Measure ambient/leaf difference
Measure the live transpiration rate of the leaf with this useful metric.
Wi-Fi enabled
Ultra stable Wi-Fi connection for longer distance data collection.
Offline data collection
No Wi-Fi? No problem! The Grow Sensor continues to log-data when you’re offline.
Adjustable hanging rig
Easily adjust the hight of the sensor as plants grow with our adjustable hanging cable and rig.
Tripod mount compatible
Mount the Grow Sensor on a standard camera tripod for added flexibility.
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Read the room
Introducing the Grow app
Easy to use, and built to work perfectly on your mobile device - no exceptions.
The best graphs in the industry
Drill down into your data with graphs that you can really use on your mobile device.
Alerts and limits
Set notifications on data. If your temperature is too high, you'll be the first to know.
Live mode (coming soon)
Need to check something fast? Turn on live mode for super fast data collection.
View data trends
Always know if your grow room is stable. View environmental trends at a glance.
Day and night photoperiod
Set limits on day and night photoperiods. Look at historical limit changes on your graphs.
Dark-mode app
Easy on the eyes first thing in the morning and last thing at night.
Grow diary (coming soon)
Collect data and leave notes on your grow. Continually improve every harvest.
Emergency alerts
Set emergency notifications and react fast. If your lights fail, or there’s a spike in temperature you’ll know.
Dashboard view
Get a top level overview of all of your grows in one list.
Power saving mode (coming soon)
Make your sensor last longer by choosing what to measure and when.
Set grow start & end dates
Set the grow start, end and flower date. Easily reveiw your past grows to replicate the growing conditions.
Encrypted data
Safety comes first. Your data is encrypted so you stay safe.
Get your free VPD & environment calculator
Perfect your environment.
Stay in the VPD sweet spot.
Ideal temperature ranges for day & night.
Prevent mould.
Induce colour.
Grow the best plants.
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Built for crop steering
Plug-in a Substrate sensor
Take your results to the next level with dry backs and EC monitoring. The future of fertigation is here. Compatible with the worlds best SD1-12 probes.
Measure dry backs
Fertigate at the right time, then sit back and watch the magic happen.
Measure EC
Precisely measure the electrical conductivity of your growing medium.
Measure soil temperature
Soil too cold? Well now you’ve got the data so you can act!
High accuracy
A highly accurate, industry leading soil sensor that you can trust.
Made for coco, soil and more
Whether you grow in coco, soil, rockwool, mixed media or water, we’ve got your back.
MODBUS compatibility
Link up cost effective substrate sensors to your Grow Sensor (in development).
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Wet-150
Compatiable with the Delta-T WET-150 substrape probe.
TDR-310W
Compatible with the Acclima TDR-310W and TDR-315N substrate probe.
Teros 12
Compatible with the Meter Group TEROS 11 and 12 substrate probe.
Terralink
Compatible with the Growlink Terralink substrate probe.
What makes the Grow Sensor different from other sensors?
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. 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. 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. 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. 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.) 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. Lastly, the Grow Sensor is designed and manufactured in Europe, adhering to strict quality standards that set it apart from mass-produced alternatives.
How accurate are the Grow Sensor’s measurements?
Extreme accuracy is our standard—if it wasn’t, we wouldn’t launch the product. 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. 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. Here’s the level of precision you can expect from the Grow Sensor: 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) CO₂ Monitoring: • Measurement Range: 400 ppm to 5000 ppm • Accuracy: ±40 ppm + 5% 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 We built this sensor for growers who need real, actionable data. Whether you’re dialing in climate conditions, managing CO₂, or optimising lighting, you can trust the Grow Sensor to deliver precision—every time. If you have specific questions, reach out to us at hi@growsensor.co.
Can I monitor my grow remotely?
Yes! The Grow Sensor is designed for real-time remote monitoring, so you’re always connected to your grow—no matter where you are. 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.
Do I need a hub or extra equipment to use the Grow Sensor?
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. 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. Simply power it up, connect to Wi-Fi, and start monitoring—no complicated setup, no hidden extras.
How easy is it to set up the Grow Sensor?
Setting up the Grow Sensor is quick and effortless—no technical expertise required. 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.
Does the Grow Sensor work with Home Assistant?
Almost! Home Assistant integration is currently in development and will be available soon. We believe in an open ecosystem that allows growers to seamlessly integrate their tools and software. Our goal is to ensure that the Grow Sensor works effortlessly with Home Assistant, giving you even more control and flexibility in your grow environment. Stay tuned for updates—we’re working hard to bring this feature to you soon!
How long does the battery last?
Battery life depends on the mode you select: • Standard mode (default): Lasts approximately 2 weeks on a single charge. • Power-saving mode: Reduces the frequency of readings from power-hungry sensors, extending battery life up to 10 weeks. 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.
How secure is my data?
Your data is encrypted and securely stored, ensuring it remains private and protected. 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.
Is there a subscription fee?
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.
Where do you ship to?
We currently ship to the UK, EU, US, and Canada. 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!
What warranty and guarantee do you offer?
We offer a 365-day limited warranty on all Grow Sensors purchased directly from us. 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. To start a warranty claim, email us at support@growsensor.co.
Do you provide customer support?
Absolutely! We’re here to help with any questions you have about our products or your grow. 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!
"Excellent device! The grow sensor is an essential piece to the garden. A game changer for cultivation."
Nicholas Ezzo
From Trustpilot
"Grow Sensor is that user-friendly tool that helps professional growers sleep well at night."
Nate Lipton
CEO at GrowersHouse & CannaCribs
"No BS the only sensor you need. Crafted by genuine growers for growers."
Ben (NZ)
From Trustpilot
"Ive wanted a device like this for year. Its the fist app I look at in the morning and the last at night."
John Stanley
United Kingdom
"I have to say its an incredibly impressive device. Accurate measurements for everything."
Christoph Herzog
From Trustpilot
"Love how easy the app is to use. The end user was clearly at the forefront of the design process."
Ryan (USA)
From Trustpilot
"If your serious about growing this device is an absolute game changer."
Mike (Cannada)
From Trustpilot
"Excellent device! The grow sensor is an essential piece to the garden. A game changer for cultivation."
Nicholas Ezzo
From Trustpilot
"Grow Sensor is that user-friendly tool that helps professional growers sleep well at night."
Nate Lipton
CEO at GrowersHouse & CannaCribs
"No BS the only sensor you need. Crafted by genuine growers for growers."
Ben (NZ)
From Trustpilot
"Ive wanted a device like this for year. Its the fist app I look at in the morning and the last at night."
John Stanley
United Kingdom
"I have to say its an incredibly impressive device. Accurate measurements for everything."
Christoph Herzog
From Trustpilot
"Love how easy the app is to use. The end user was clearly at the forefront of the design process."
Ryan (USA)
From Trustpilot
"If your serious about growing this device is an absolute game changer."
Mike (Cannada)
From Trustpilot
The Grow Sensor
Grow the best plants.
Grab a Grow Sensor today and maximise your yield and product quality.
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