Sensor & App
Built for Home & Garden Plant Care
Four precision sensors, the PlantSense Connect app, and 3+ months of battery life — all in a probe designed to keep your indoor and outdoor plants healthy.
What's Inside
Sensor Specifications
Research-grade sensors in a consumer-friendly package for your home & garden.
Capacitive Soil Moisture
Corrosion-resistant capacitive sensor reads soil moisture on a 0–100% scale, from dry to fully soaked. Capacitive sensing passes no current through the soil, so the probes don't corrode — years of reliable readings indoors and out.
Temperature Sensor
High-precision digital sensor with +/-0.3°C accuracy. Monitor temperatures indoors or in the garden to protect plants from cold drafts, frost, and heat stress.
Relative Humidity
The same AHT20 chip provides +/-2% RH accuracy. Know if your tropical plants need more humidity or if your succulents are too damp — indoors or on the patio.
Photodiode Light Sensor
Measures ambient light in lux and charts it through the day. Find the perfect spot for each plant — whether it's a windowsill indoors or a sunny garden bed.
What's Inside
Custom PCB with ESP32-WROOM, AHT20, photodiode & capacitive moisture sensor
Take It Apart
Inside the Sensor
Modelled from our own design files: the circuit board as the factory assembles it, and the shell and probe holder exactly as we print them. Open it in 3D, turn it around, and put it back together.
- 1Light sensorReads daylight through the shell
- 2RESTART buttonWakes the sensor for 5 minutes
- 3Wi-Fi + BluetoothBluetooth setup, then Wi-Fi
- 4USB-C chargingSlide the shell off to charge
- 5Status lightPairing, Wi-Fi and update states
- 6Temperature + humidityMeasures the air around your plant
- 7Power switchSlide to ON when you set it up
- 81500 mAh battery3+ months on a charge
- 9Translucent shellLets light in and the status light out
- 10O-ring sealTwo O-rings keep splashes out
- 11Moisture probesTwo stainless steel rods read the soil
In the App
PlantSense Connect
The free companion app for every sensor — on the App Store and Google Play. The web dashboard works in any browser too. See what's inside the app.
PlantSense Connect is free on the App Store for iPhone and on Google Play for Android.
Real-Time Monitoring
View live sensor data from anywhere — home, garden, or on the go. Beautifully rendered charts show moisture, temperature, humidity, and light over time.
Smart Push Alerts
Set custom thresholds for each metric. Get notified the moment your soil gets too dry, too cold, or your plant needs attention — indoors or outdoors.
Plant Identification
Snap a photo and our AI-powered identification service (via PlantNet) tells you exactly what species your plant is and its optimal care ranges.
Analytics & Trends
Historical charts help you spot patterns. Compare watering frequency vs. soil moisture retention and optimize your home and garden care routine.
Power & Connectivity
Set It and Forget It
3+ months of battery life and a reliable WiFi connection — designed to run quietly in the background.
3+ Months of Battery Life
PlantSense uses a 90-minute-to-5-hour deep-sleep cycle to maximize battery life. The ESP32 wakes, reads all sensors, transmits data over WiFi, then returns to sleep — drawing only microamps between readings.
- USB-C rechargeable — no disposable batteries
- Low-battery push notification before it runs out
- Accurate fuel-gauge battery percentage in the app
- Water-resistant sealed housing — safe for daily watering
WiFi Connectivity
PlantSense connects to your 2.4 GHz WiFi network to send sensor readings to the cloud. Bluetooth Low Energy is used for initial device provisioning and WiFi credential setup.
- BLE provisioning — no typing WiFi passwords on the device
- Automatic reconnection after power cycles
- Secure TLS connection for all data transmission
Water-Resistant Design
The electronics housing is sealed for splash resistance, and the capacitive probes carry no current through the soil, so they don't corrode the way resistive probes do. PlantSense handles everyday watering and rain, downpours included. It isn't made to go under water, so keep the sensor out of standing water.
Smart Home Integration
Smart Home Ready
PlantSense is built on ESPHome and has a free Home Assistant integration, so every reading can drive your dashboards and automations.
Home Assistant Integration
Install the free PlantSense integration through HACS and sign in with your PlantSense account. Soil moisture, temperature, humidity, light, and battery appear as Home Assistant entities, ready for dashboards and automations.
- Readings stay current while the sensor sleeps between wake-ups
- No broker or network setup: it reads from your PlantSense account
- A PlantSense dashboard card shows each plant at a glance
Automations & Dashboards
Use your plant data to trigger smart home automations. Turn on grow lights when light levels drop, get notified through any Home Assistant integration when soil is dry, or log historical trends alongside your other home sensors.
- Trigger automations based on moisture, temperature, or light
- Build custom Lovelace dashboards for your garden
- Compatible with any Home Assistant notification service
Works With or Without Home Assistant
PlantSense works standalone with the PlantSense Connect app — no smart home setup required. For power users, the ESPHome-based firmware provides full Home Assistant integration out of the box. Use one, the other, or both at the same time.
PlantSense
See It in Action
Order your PlantSense sensor today and experience smarter home & garden plant care.