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Enabling better global research outcomes in soil, plant & environmental monitoring.


The SNiP-SPW3 is a 'Sensor Node Integrated Package' for LoRaWAN or CAT-M1 communication of real-time plant diameter measurements in relation to real-time weather parameters and Volumetric Soil Water VSW% content (based on capacitance technology) for continuous plant monitoring.


The base SNiP-SPW3 integrates 1x MFR-NODE and three sensors to a site’s unique network, communication and power requirements: 1x DBS60 Band Dendrometer, 1x Atmos-14, 1x MP406 Soil Moisture Probe.

The DBS60 Band Dendrometer is an SDI-12 Band Dendrometer designed to measure short- and long-term changes in stem circumference.

The Atmos-14 monitors microclimate and evapotranspiration via the measurement of Relative Humidity, Barometric Pressure, Air Temperature, and Vapor Pressure with or without a passive radiation shield.

The MP406 provides a measurement on the absolute Volumetric Soil Water % (VSW), based on the Standing Wave, or Amplitude Domain Reflectometry (ADR) measurement principle.


See Further Specifications on the MFR-NODE

See Further Specifications on the DBS60 Band Dendrometer
See Further Specifications on the ATMOS-14
See Further Specifications on the MP406 Soil Moisture Probe Sensor

The modular nature of ICT International SNiPs allows for SNiP-SPW3 to be extended with alternative or further parameters – without requiring unique loggers to match each distinct sensor, substantially reducing the cost of getting a fuller picture on the application. The MFR-NODE can support 1x additional sensor to the base package.


The Multifunction Research Node has been designed to provide flexible communication, sensor and power options.

The MFR-NODE supports SDI-12 and 4 x dry contact digital inputs as well as optionally 2x differential / 4x single ended analogue inputs. The MFR-NODE supports sensors with higher power requirements; a solar panel can charge either the internal lithium-ion battery or both the node and sensor can be powered by an external 12V system (e.g. battery or mains source). Optional CAT-M1 provide an option for remote installation and in areas outside the range existing LoRaWAN networks. The optional multiconstellation GNSS ensures you won’t lose track of your device. The MFR-NODE has an onboard 8GB SD Card to provide data logging capabilities and full data redundancy in the event of temporary loss of communications or dropped packets – ideal for research applications.

  • LoRaWAN™ low-power long-range connectivity
  • 8GB SD Card for data storage
  • Supporting SDI-12, 2 x 32-bit dry-contact counting digital inputs.
  • Optional 24-bit ADC for 2x differential / 4x single ended sensor.
  • Optional CAT-M1
  • Solar rechargeable Lithium-ion or external 12V power options
  • Optional Multi-constellation GNSS
  • External solar/battery input: 12-32V DC.


DBS60 Band Dendrometer

The DBS60 is an SDI-12 Band Dendrometer designed to measure short- and long-term changes in stem circumference.

The DBS60 SDI-12 Band Dendrometer is similar to the DBL60, but has a cable for the connection to a SDI-12 Data Logger.

Change in Tree Circumference (mm)
Temperature (°C)


Increment sensors type
rotary position
Range 64 mm of circumference
2% of full scale
Tape strength
15 to 20 N in the whole range, stem diameter independent
Tape temperature coefficient:
17.3 x 10-6 per °C
Operating range:
   – Temperature
-30 to 60°C
   – Humidity 0 to 100%
Size 100 x 70 x 100 mm
ca 260 g
Minimal stem diameter
8 cm
Increment range
Tightening strength 15 to 20 N



(Note: The Decagon VP-4 has been replaced by the Meter ATMOS 14).

  • Microclimate measurement made simple
    If you’re doing a microclimate or evapotranspiration study, you may need up to four extra sensors to get important measurements that will benchmark your data. Not to mention you have to face the hassle of getting all those sensors integrated into your system. What you need is something simpler. With this in mind, we engineered the ATMOS 14 to be four sensors in one—air temperature, relative humidity, barometric pressure, and vapour pressure.
  • With the ATMOS 14, all your bases are covered
    Thousands of engineers and ecologists already depend on the ATMOS 14 for straightforward measurements. Whether you’re using the EM60G to look at plant emergence, leaf area index, or fractional interception, there isn’t an easier way to benchmark your data. The ATMOS 14 is a versatile, low-maintenance, and fast sensor designed to make taking temp/RH measurements simpler and therefore less work.
  • Plug it in, and walk away
    Despite its minimalist design, the ATMOS 14 provides maximum value. While other sensors require wiring and programming, the ATMOS 14 simply plugs into the EM60G (It’s also compatible with third-party data loggers). There’s no having to figure out complicated instructions. Just mount the sensor on your data logger mast, plug it in, and walk away.
  • Measures a lot. Requires very little effort.
    The ATMOS 14 is low-maintenance. It gives accurate vapour pressure and RH without a lot of cleaning. Plus it’s weatherproof, meaning it will last a long time in the field. Another helpful feature is the compact shape that fits into tight spaces, leaving room on a mast for other sensors.
  • Readings don’t get any more rapid
    Because the ATMOS 14 is plug and play, setup is quick. And responses are equally fast. Thanks to a Teflon protection screen that keeps liquid water out, but vapour moving freely through, it responds rapidly while keeping dust and liquid water off the sensor. Both features add up to time saved on your part.
  • For everything it measures, there’s not much to it
    With ATMOS 14, all your basic microclimate measurements are covered using a small, simple integrated sensor. This versatile, low-maintenance sensor will rapidly and reliably measure air temperature, relative humidity, barometric pressure, and vapour pressure, making benchmarking quick and hassle-free.
RANGE 0 to 100% RH
ACCURACY Sensor measurement accuracy is variable across a range of temperatures.
Refer to the chart in Figure 1 to determine the accuracy specification for the ATMOS 14 sensor.
(τ, 63%):
< 40 s (response time in 1 m/s air stream)
HYSTERESIS < 1% RH typical
LONG TERM DRIFT < 0.5% RH/year typical
RANGE -40°C to 80°C
ACCURACY Sensor measurement accuracy is variable across a range of temperatures. Refer to the chart in Figure 2 to determine the accuracy specification for the VP-4 sensor
(Τ, 63%)
< 400 s (response time in 1 m/s air stream)
LONG TERM DRIFT < 0.04°C / year typical
RANGE 0 to 47 kPa
ACCURACY Sensor measurement accuracy is variable across a range of temperatures and RH. Refer to the chart in Figure 3 to determine the accuracy specification for the VP-4 sensor.
RANGE 49 to 109 kPa
DIMENSIONS 1.96 cm (dia) x 5.4 cm (h)
POWER REQUIREMENTS 3.6 to 15 VDC, 0.03 mA quiescent, 4 mA during 300 ms measurement
OUTPUT Decagon Digital or SDI-12
CONNECTOR TYPES 3.5 mm (stereo) plug or stripped and tinned lead wires (pigtail)
CABLE LENGTH 5 m standard; custom cable length available upon request
Meter/Decagon: Em50 Series (Firmware 2.19+)
ICT SDI-12 logger, AML, AWS, Universal Telemetry Hub
Campbell Scientific: Any logger with serial I/O
DataTrac (rev 3.11+)

VP4 Humidity Acc

VP4 VP Acc


MP406 Moisture Sensor

Measure volumetric soil moisture for scientific research, agriculture and civil engineering.

The MP306 has a compact body and the needles are arranged in a single plane making it ideal for use in soil columns. It is also ideally suited to measuring pots in glasshouses and growth cabinets. The MP306 can also be installed in the field, with a lifespan of 20+ years in the most extreme conditions.

  • Volumetric Soil Water Content (%) or can simultaneously measure soil water potential
  • Highly accurate and precise
  • Robust, stainless steel needles and epoxy body
  • Measures in saline, toxic and high temperature soils
  • Rapid measurement
  • Can be buried for up to 20 years



Measurement Range 0-100 VSW%
Accuracy 1% VSW% after calibration to a specific soil type
± 5 VSW% using the supplied soil calibration
Resolution 0.01% VSW%
Response Time Less than 0.5 seconds
Stabilisation Time 3 seconds approximately from power-up


Input Requirements 9-18 V DC unregulated
Power Consumption 24 mA typical, 30mA max
Output signal 0-1160mV for 0-100 VSW%


Total Length 210 mm
Needle Length 60 mm
Needle Seperation 12 mm
Needles Stainless Steel (Grade 316) – does not corrode in saline solutions
Exterior ABS Plastic
Cable 4.5m Standard


Environment Designed for permanent or temporary burial


MP406 and MP306 Wiring R1-1