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Start with GEIA kits
Choose tested kits, gateways, add-ons and packages instead of guessing which parts work together.
View Kits →
Compatible hardware. DIY friendly. API ready.
Connect or buy hardware your way
Use tested GEIA kits, GEIA nodes, compatible sensors, ESP32-based boards, GEIA firmware, MQTT devices, REST APIs or your own code to build the grow automation setup that fits you.
BOARD
From $35 + shipping
KITS
From $295
AUTOMATION
From $399 / €349
📦GEIA KitsSafest setup path
▣GEIA BoardESP32-based DIY path
⚡GEIA FirmwareFlash supported boards
⌘MQTT / APIBring your own code
Choose your route
Start safe, build DIY, or connect your own devices
GEIA supports growers who want tested hardware, makers who want flexible boards, and developers who want to connect custom firmware, sensors and services.
Use the GEIA board
ESP32-based board with I²C, digital, analog, RS485, 12V appliance power and add-on paths.
Explore Board →Flash GEIA firmware
Use supported boards with GEIA base firmware, device roles, mappings and app pairing.
Flash Firmware →Bring your own code
Connect custom devices, scripts and dashboards through MQTT, REST API or integration work.
View API Docs →Safest setup path
Start with tested GEIA kits
Choose a kit, gateway type, add-ons and package instead of guessing which sensors, boards and relays will work together. Start with monitoring, then expand into automation.
Most Complete
Total Automation Kit
Full water + climate automation starter system.
Best for: Growers who want both irrigation and environment control.
Irrigation control
Water level monitoring
Leak detection
Temperature & humidity monitoring
Best for Water
Water Management Kit
Automate irrigation, tanks, and water monitoring.
1 irrigation line / valve group
1 tank or mixing tank
Water level monitoring
Leak detection
✓
Best for Climate
Environment Kit
Monitor and automate climate and air quality.
Best for: Greenhouses and grow rooms.
Temperature / humidity monitoring
Ventilation control
Lighting automation
Air quality / CO₂ monitoring if selected
Best for DIY
DIY Starter Kit
Build your own starter automation system.
Best for: Makers and tinkerers.
Basic monitoring
Basic manual control
Starter automations
GEIA board
ESP32-based · from $35 + shipping
The simple grow automation board for real sensors and relays
The GEIA board gives makers and growers a cleaner way to connect common grow hardware: I²C sensors, digital signals, analog probes, RS485 devices and 12V appliance power. Use it with GEIA firmware or your own code.
- I²C sensor bus for modular expansion
- Digital inputs/outputs for switches, states and control
- Analog inputs for probes and sensor modules
- RS485 / Modbus path for industrial devices
- 12V appliance power
- Relay add-on for 2× 12V control
- LoRaWAN add-on path for remote nodes
- Works with GEIA firmware or custom code
Explore the board
Click a hotspot to learn what each interface is used for.
GEIA firmware tool
Flash GEIA base firmware and pair the device using GEIA App
Use the firmware uploader to flash supported boards, then configure the device inside GEIA: board profile, sensor & relays mappings.
01Select board profileChoose GEIA board, ESP32 path or supported board profile.
02Flash base firmwareUpload GEIA firmware from the tool or GitHub release.
03Pair with GEIA AppAdd device to your account for logging, rules and alerts.
Custom sensor readings can be used for monitoring, logging and safety rules. Full automation programs require reviewed and approved hardware mappings.
GEIA Firmware Tool
Custom or unapproved sensors may be used for monitoring, logging and safety rules. They are not enabled for automation programs unless reviewed and approved.
Catalog last updated:
August 22, 2026 at 14:37
This catalog is constantly growing and is not a complete list of all supported hardware. Submit your device if you want GEIA to review compatibility.
IoT Hydroponics Automation Board v2 – For Aquaponics, Aeroponics & Hydroponics
Automate your grow with the GEIA IoT Hydroponics Automation Board v2 – simple, reliable, and built for DIY hydroponics, aquaponics & aeroponics. Power sensors, pumps, and solenoids with minimal wiring…
€ 39.00
ESP32-based boards
Supported ESP32 boards can be flashed with GEIA firmware or connected using custom MQTT/API code.
This includes: ESP32-Devkit, D1 Mini WEMOS, and All boards using the ESP32 microcontrollerESP8266-based boards
Useful for simple monitoring nodes and legacy DIY builds, depending on firmware support and memory limits.
Interface: Interface: Wi-Fi / GPIO / I²C / AnalogWemos (D1/MINI/R1/R2) ESP32/ESP8266
As with any ESP32 Based micro-controllers, Wemos boards are fully supported (D32/D1/MINI/R1/R2/R3)
GEIA Base Firmware for ESP8266 based chips is Legacy, Not secured. ES32 based will use the latest GEIA FirmwareDHT22
DHT22 based sensors used for Air temperature & Humidity monitoring and Automation control. Though not so precise and has failures, its fully supported in the app & firmware.
Interface: GPIOSHT3x Series
Generic support for SHT30, SHT31 and SHT35 digital temperature and humidity sensors connected through a compatible GEIA node.
BYOD temperature and humidity sensor.Hydroponics Water Temperature sensor 3 meters / 9.8 Foot
€ 6.99
MQ-137 Ammonia Sensor
Low-cost semiconductor sensor for detecting ammonia, useful around fertilizer, composting and other areas where NH₃ monitoring is required.
Ammonia / NH₃ detection.IP camera with snapshot URL
Camera devices that expose a direct image capture URL can be used for periodic capture and grow logs.
Interface: HTTP/S snapshot URLRTSP camera
Network cameras with RTSP stream can be connected through gateway-side capture or video processing, used both as TimeLapse & Live Cam
Interface: RTSP streamESP32-CAM
Low-cost DIY camera module for snapshots and basic time-lapse capture.
Interface: Wi-Fi / HTTP snapshot / GEIA firmware pathGrowControl Intelligent 4 Plug Power Strip
Specifications: 1. Operating Voltage: AC 230-240V 2. Control Mode: From App 3. Mode of transport: Wifi 2.4G 802.11 b /…
€ 49.00
GrowControl 4ch Relay Board
AC 220V Smart Remote Control WIFI Wireless Switch Module 4CH 4 Channel 10A Relays Switch Control Delay Relay IOT For…
€ 19.99
AC 220V Smart Remote Control WIFI Switch 4CH (4 Channel) 10A Relays Switch IOT For Smart IOT Grow
AC 220V Smart Remote Control WIFI Wireless Switch Module 4CH 4 Channel 10A Relays Switch Control Delay Relay IOT For…
Original price was: € 16.00.€ 14.99Current price is: € 14.99.
Relay Switch / Actuator – Up for 2 devices (2CH)
€ 4.80
SSR Relays
SSR Relays with 3-5VDC Signal lines.
SSR RelayAdvanced DIY WiFi Smart Socket
Advanced DIY smart sockets and ESP-based relay devices can sometimes be connected to GEIA through ESP8266/ESP32 base firmware. This route is intended for experienced users who understand firmware flashing, electrical…
Not recommended for beginners or critical equipment unless the device, firmware, load rating and fail-safe rules are tested. Stock cloud firmware is not considered a trusted GEIA automation path.DoorLock Pro with Access control
This includes 1x Electro Magnetic Door Locker in the size of your choice (Suitable for Boxes/Small doors) 1x Motion Sensor…
€ 135.00
DoorLock Basic
This includes 1x Mini Electric Door Locker in the size of your choice (Suitable for Boxes/Small doors) 2x Motion Sensor…
€ 53.00
DoseMate WiFi Dosing Pump
€ 89.00
2 Wire Solenoid Valves
Supports any solenoid valves found in the market. Note: 12v solenoid valves can be powered from GEIA Board using the relay extension module.
12v / 24v / 110v / 230vExternal Dosing / Metering Pump
Connect a compatible external metering pump for high-volume nutrient, pH and additive dosing. Configure or calibrate its flow rate in GEIA for accurate volume-based dosing.
For large reservoirs and commercial fertigation systems.Grundfos SMART Digital XL DDE
Professional diaphragm dosing pump for concentrated nutrients, acids, bases and additives. Suitable for large tanks and commercial fertigation, with dosing rates up to 200 L/h depending on model.
High-capacity precision dosing for large reservoirs.ProMinent beta/gamma/ XL
Smart solenoid metering pump for precise nutrient and chemical dosing. Suitable for greenhouse fertigation, reservoir dosing and automated pH or nutrient correction.
Industrial metering pump up to 80 L/h.REST API devices
External services, scripts and applications can send data or device events through API integration.
Some integrations require custom development.MQTT devices
Custom devices can publish readings, states and events into GEIA using MQTT paths.
Requires topic mapping and device registration.Add Your Robot or Automation Machine
Robots, inspection systems, autonomous carts, greenhouse machines and custom automation equipment can connect to GEIA through MQTT, REST API or custom bridge integrations.
For robotics teams, machine builders and advanced growers who want GEIA dashboards, logs, alerts or grow-context data around their robot.Add Your Script, App or Integration
Connect scripts, dashboards, plugins, SaaS tools, Node-RED flows, Home Assistant bridges, farm software or custom services to GEIA using MQTT, REST API, webhooks or data exports.
For developers and partners who want to build with GEIA, send device data, read grow history, trigger alerts or connect external workflows.Want to use your own sensor?
You can connect custom sensors for monitoring, logging and safety rules. Full automation programs require reviewed and approved hardware mappings.
MQTTDevice telemetryPublish readings, states and events.
APIExternal appsConnect scripts, dashboards and services.
RS485Industrial pathConnect mapped Modbus/RS485 devices.
DATAHistory & logsStore readings, states and grow records.
Integration-ready devices
Connect MQTT, REST API and third-party devices
GEIA can act as the grow/farm backend around sensors, scripts, existing automation systems, external dashboards and partner devices. Some integrations may require custom setup or development.
Request compatibility
Have hardware you want to use?
Send us the sensor, board, controller or device you want to connect. We’ll review whether it can work through GEIA firmware, MQTT, REST API, RS485/Modbus or a custom integration path.
Hardware nameModel, vendor or product link.
InterfaceI²C, analog, GPIO, RS485, MQTT, API, etc.
Use caseWhat should it monitor or automate?
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Before you automate critical equipment
Not every cheap sensor, relay or board is reliable enough for critical automation. For dosing, heating, irrigation, CO₂, pumps or other life-supporting control, use tested hardware, local gateway automation and fail-safe rules.
Ready to connect your hardware?
Start with compatible devices, flash GEIA firmware, build with MQTT/API, or choose a tested starter kit.
