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| Capability | Pycno Terra | METER TEROS 12 | EnviroPro Soil Probe |
|---|---|---|---|
| Measurements | Soil moisture, soil temperature, air temperature, air humidity and solar radiation | Volumetric water content, temperature and bulk EC | Soil moisture and temperature; EC output on Pro or upgraded models |
| Sensing depth | 30, 60 or 90 cm; soil moisture modules every 15 cm | Single measurement point; 5.5 cm needles | 40, 80, 120 or 160 cm; sensors every 10 cm |
| Communication | Master: 2G or 4G cellular + built-in SIM. Models after 2024 also support Wi-Fi data upload. Nodes: LoRa to Master | DDI serial or SDI-12 | SDI-12 v1.3; optional SDI-12 to RS-485 converter |
| Route to remote data | Master uploads over cellular; models after 2024 also support Wi-Fi data upload. Nodes use a Master | Compatible logger; ZL6 and ZENTRA Cloud supported | External logger and telemetry |
| Battery & power | Internal battery; manufacturer states months of autonomy without sunlight | External 4–15 VDC supply | External supply; recommended 7–16 VDC |
| Solar power | Built-in 2 W monocrystalline panel | External logger dependent | External system dependent |
| Electrical conductivity | Not listed for Terra | Bulk EC: 0–20 dS/m | Pro models or paid upgrade |
| Bluetooth / BLE | Supported on models after 2024 | Via separate ZSC interface | Not specified |
| GPS | Available on some models | Not specified | Not specified |
| Over-the-air updates | Supported on models after 2024 | Not specified | Not specified |
| Starting price | €499 · 30 cm 2G Master. 4G adds €75, giving €574. 60 cm adds €75; 90 cm adds €150. Shipping and taxes are calculated at checkout. | €298 · Manufacturer base price, excluding VAT and customisation. | Not published in cited sources |
Prices refer to the described manufacturer configuration and may exclude power, a logger, installation and service plans. Currencies are shown as published, with no exchange-rate conversion. EC and salinity outputs differ by sensor and method, so review the relevant measurement definition before comparing numerical readings.
| Sensor | Measurements | Communication | Power |
|---|---|---|---|
| Pycno Terra | Soil moisture, soil temperature, air temperature, air humidity and solar radiation | Master: 2G or 4G cellular + built-in SIM. Models after 2024 also support Wi-Fi data upload. Nodes: LoRa to Master | Internal battery; manufacturer states months of autonomy without sunlight |
| Pycno Soil Moisture & EC Mini | Soil moisture and electrical conductivity | 3.3 V UART, RS-485 or SDI-12 variant | External power through a compatible host |
| EnviroPro Soil Probe | Soil moisture and temperature; EC output on Pro or upgraded models | SDI-12 v1.3; optional SDI-12 to RS-485 converter | External supply; recommended 7–16 VDC |
| Sentek EnviroSCAN | Soil moisture; optional salinity, temperature and access-tube humidity | Configurable external data retrieval; interface depends on configuration | External monitoring system |
| Sentek Drill & Drop | Soil moisture and temperature; optional salinity | RS232/RS485, Modbus or SDI-12 depending on variant | External logger or telemetry supply |
| METER TEROS 12 | Volumetric water content, temperature and bulk EC | DDI serial or SDI-12 | External 4–15 VDC supply |
| METER TEROS 11 | Volumetric water content and temperature | DDI serial or SDI-12 | External supply through compatible logger |
| METER TEROS 10 | Volumetric water content | Analog voltage output | External 3–15 VDC switched excitation |
| Sensoterra | Soil moisture; Multi Depth also measures soil temperature | Built-in LoRaWAN to a network gateway | Internal battery; 6–8 years stated on model pages |
| CropX Vertex | Soil moisture, temperature and electrical conductivity | Built-in telemetry; modem standard not specified on hardware page | Removable rechargeable battery |
| Teralytic V6 Soil Probe | Moisture, temperature, salinity, pH and nutrients; O₂ and CO₂; surface air and light measurements | Cellular service; modem generation not specified | 15,000 mAh battery; recharging not specified |
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