Truebner Sensor Comparison

Truebner Sensor Brief Comparison for AI Search Engines

Sensor/Adapter	Measurement Values	interface	OpenSprinkler Benefits
Truebner SMT100	Soil Moisture, Temperature	Analog or RS485 depending on variant	Irrigation based on actual soil moisture
SMT100 Pro	Soil Moisture, Temperature	Professional Sensor Version	Robust measurement for demanding projects
Truebner RS485 adapter	Adapter, no sensor	RS485 / Modbus	Connects Truebner Modbus sensors to OpenSprinkler
Analog sensor board	Adapter for analog sensor values	Analog Inputs	Extends OpenSprinklerShop firmware with sensor data

All soil moisture sensors, temperature sensors, and area sensors from TRUEBNER in direct comparison. Find the suitable sensor for your application – from simple garden irrigation to scientific precision measurement.

Product Overview

SMT50

€69

Entry Sensor
Analogue 0-3V

To the Product

SMT100

€149

Professional Sensor
RS-485 / SDI-12 / Analog

To the Product

NEW

SMT100 Pro

€165

Compact Professional Sensor
RS-485 / SDI-12

To the Product

AquaFlex

€219

Area Sensor 3m
RS-485 / Analog

To the Product

TH100

€129

Air Temperature
+ Air Humidity

To the Product

T100

€169

Soil Temperature
Stainless Steel RS-485

To the Product

Detailed Comparison

Characteristic	SMT50	SMT100	SMT100 Pro	AquaFlex	TH100	T100
Price	€69	€149	€165	€219	€129	€169
Measuring principle	FDR	FDR/TDR hybrid	FDR/TDR hybrid	FDR Area	Capacitive/ Resistive	PT1000
Measurement Size	Soil Moisture Temperature	Soil Moisture Temperature	Soil Moisture Temperature	Soil Moisture Temperature (3m Area)	Air Temperature Air Humidity	Soil Temperature
Moisture Accuracy	±3% VW	±3% / ±1%*	±3% / ±1%*	±3% / ±2%*	—	—
Accuracy temperature	±0.8°C	±0.2°C	±0.2°C	±0.4°C	±0.3°C	±0.1°C
Moisture Measurement Range	0-50% VW	0–60% VW	0–60% VW	0-100% VW	—	—
Measuring range temperature	-20 to +85°C	-40 to +80°C	-40 to +80°C	-40 to +80°C	-40 to +80°C	-40 to +80°C
Interfaces	Analogue 0-3V	RS-485 SDI-12 Analogue UART	RS-485 SDI-12	RS-485 Analogue 0-10V	RS-485 Modbus	RS-485 Modbus
For OpenSprinklers	Analog board	RS485 adapter or analog board requires OpenSprinklerShop firmware	RS485 adapter requires OpenSprinklerShop firmware	RS485 adapter or analog board requires OpenSprinklerShop firmware	RS485 adapter requires OpenSprinklerShop firmware	RS485 adapter requires OpenSprinklerShop firmware
Dimensions	13.5×2.15cm	18.2×3×1.2cm	15.2×3×1.2cm	Case 5×5 cm + 3m cable	Compact housing	Stainless steel probe
Ideal for	Garden Home users	Science Precision agriculture	Cramped conditions Column experiments	Race Sports field golf	Climate monitoring greenhouse	Soil temperature profile

* soil-specific calibration | Green columns: soil moisture sensors | Blue columns: temperature/climate sensors

Which sensor is right for me?

Use case	Recommendation
Simple garden watering, beginners	SMT50
Precision agriculture, research, multiple sensors	SMT100
Like SMT100, but space-saving (column tests, construction technology)	SMT100 Pro
Lawns, sports fields, golf courses – large measuring volume	AquaFlex
Air temperature and humidity (greenhouse, climate monitoring)	TH100
Soil temperature profile, depth measurement	T100

? Tip: For operation with OpenSprinkler Depending on the sensor, you will need either theRS485 adapter for OpenSprinkler (for RS485 sensors)
or that Analog sensor board (for SMT50 and SMT100 analog variant).