Soil moisture sensor SMT50 Truebner - Image 2

Soil moisture sensor SMT50 Truebner - Image 3

Soil moisture sensor SMT50 Truebner

Name: Bodenfeuchtesensor SMT50 Truebner
Brand: Truebner
SKU: SMT50
Price: 69.00 EUR
Availability: InStock
Rating: 5.00 (3 reviews)

Rated 5 out of 5 based on 6 customer ratings

Unverified overall ratings

69,00 €

Compact, functional and robust: The glass fiber reinforced board enables a cost-effective design and easy installation thanks to the blade shape. The housing and cable are waterproof.

SKU: SMT50 Categories: Home and Garden, Truebner

The SMT50 is a reliable and cost-effective soil moisture sensor from Truebner that is particularly suitable for intelligent garden irrigation and simple agricultural applications. With its analog 0-3V output, it is easy to connect and compatible with the OpenSprinkler Analog Sensor Board.

Operation with OpenSprinkler

The SMT50 has an analog 0-3V output and is powered via the Analog sensor board (€59) connected to OpenSprinkler. Up to 8 sensors can be operated on one board.

Technical data

Characteristic	Value
Measuring principle	FDR
Accuracy soil moisture	typically ±3% VW (0–50% VW)
Accuracy temperature	typically ±0.8°C
Soil moisture resolution	0.2% VW (8-bit)
Resolution temperature	0.1°C (10mV/°C)
Soil moisture measuring range	0-50% VW
Measuring range temperature	-20 to +85°C
Interfaces	Analogue 0–3V (soil moisture + temperature)
Startup time	300 ms
Output resistance	10 kΩ
Power supply	3.3–30 V DC, 2.7 mA
Cable length	10 m
Dimensions	approx. 13.5 cm × 2.15 cm

Documents & Downloads

📄 Data sheet SMT50
📄 Manual SMT50

Sensor comparison: SMT50 vs. SMT100 vs. AquaFlex

Characteristic	SMT50	SMT100	AquaFlex
Measuring principle	FDR	FDR/TDR hybrid	FDR (Area sensor)
Measuring volume	Point measurement	Point measurement	3 m area measurement
Accuracy soil moisture	±3%	±3% / ±1%*	±3% / ±2%*
Accuracy temperature	±0.8°C	±0.2°C	±0.4°C
Interfaces	Analogue 0-3V	RS-485, SDI-12, Analog, UART	RS-485, Analog
For OpenSprinklers	Analog sensor board	RS485 adapter or Analog board requires OpenSprinklerShop firmware	RS485 adapter or Analog board requires OpenSprinklerShop firmware
Ideal for	Garden, home users	Science, precision agriculture	Lawn, sports fields, golf

* Soil specific calibration

Do you need higher accuracy? Switch to SMT100 (€149) or for AquaFlex (€219) for lawns.

Weight	0.33kg

Product safety

Manufacturer information

Truebner GmbH
Burgunderstr. 42
67435 Neustadt
Germany

E-mail: info@Truebner.de

Person responsible for the EU

Dennis Trebbels

3 reviews for Soil moisture sensor SMT50 Truebner

Rated 5 out of 5

Huber – 24. December 2020

Good service; Thank you

Verified purchase. More information
Rated 5 out of 5

Raymund Heidrich – 10. July 2020

Ordering process and delivery were excellent. Quality and measurement values are (so far) as described and expected. Such a product can hardly be conclusively assessed a few days after purchase.

Verified purchase. More information
Rated 5 out of 5

Bernhard Schneider – 22. May 2020

Good quality has its price.

Verified purchase. More information