GroPoint Profile

GroPoint profile soil moisture sensor

GroPoint Lite

GroPoint Lite soil moisture sensor

GroPoint Pro

GroPoint Pro soil moisture sensor

GroPoint Classic

GroPoint Classic soil moisture sensor

GP-DU Handheld Sensor Reader

GP-DU Handheld soil moisture meter

Bluetooth Sensor Pod

Bluetooth sensor pod wireless soil data collection

GroPoint CloudConnect

GP-DU Handheld soil moisture meter

BluetoothSensor Pod

Retrieve data wirelessly to your smartphone.

The Bluetooth Sensor Pod is both a data logger and a wireless access point to retrieve data through your smartphone. It can be left in the field connected to your sensors, allowing you to access the data when convenient.

The free GP Reader app (available for Android devices only) is used to check current conditions, download data and set up the sensor sampling interval (from one minute to 12 hours). With the app open on your smartphone, simply push the button on the Bluetooth Sensor Pod to wake it up and automatically establish a wireless connection. Tap the Download button in the app to download all logged data. You can also check the current battery level of the Sensor Pod.

The Bluetooth Sensor Pod connects to up to 10 SDI-12 GroPoint sensors (with the 4-Port SDI-12 Expansion Bar). Sensors must terminate in an EN3 connector.

Data is stored in non-volatile memory and is retained even if the battery fails. The memory can hold up to 32,520 measurements.

  • Retrieve sensor data wirelessly to your smartphone with a quick visit to the site.
  • Stay connected up to 60m (200 ft) away.
  • Operates with AA alkaline household batteries.
  • Batteries will last up to 6 months with typical use.
  • Water-resistant, IP65-rated enclosure.
  • Data is retained even with no battery.

Sensor port connector

1x Switchcraft EN3P4F (4 female pins)

Wireless protocol

Bluetooth 4.0 LE

Maximum number of sensors

10 (via multiple 4-Port SDI-12 Expansion Bars)


1 MB
This is the equivalent of:

  • > 50K GroPoint Lite measurements
  • > 20K moisture and temperature measurements from a GroPoint Profile 4-segment sensor

Measurement interval

Configurable by user
Range: 1 minute to 12 hours

Operating temperature range

-20°C to 65°C (-4°F to 150°F)

Storage temperature range

-20°C to 70°C (-4°F to 160°F)


2x AA alkaline batteries

Environmental sealing

Enclosure: IP65
Push button: IP67
Sensor connectors: IP66/IP68

Battery life

Up to 6 months, depending on measurement interval


11.4cm x 8.0cm x 6.0cm (4.49” x 3.15” x 2.36”)


216 g (7.62 oz)


1-year limited parts and labour

Does the Sensor Pod need to be kept in a watertight enclosure?

The Sensor Pod's enclosure is IP76 rated, meaning it can withstand immersion in water up to one meter (3.3 feet) for 30 minutes, tested in laboratory conditions. However, this is not considered an environmentally hardened enclosure. While it's not necessary to enclose it in a more watertight enclosure, it is a good idea to keep it from direct exposure to the elements. Covering it with a structure and rating it up off the ground are good ideas.

Can I access the data if I have an Apple iPhone or tablet?

At the moment, the Bluetooth Sensor Pod software "GP Reader" is only available for Android devices.

How do I export the data to my PC so I can analyze it with PC-based or cloud-based software?

When downloaded to your smartphone, the data is stored in a universal CSV file format, and the fields name is based on the serial number of the sensor. You can use the built-in Android file explorer to transfer the file, via email or wireless transfer.



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GroPoint 4-Port SDI-12 Expansion Bar

4-port expansion for soil sensors

Connects to any open channel of a GroPoint data logger and provides connectors for up to four more sensors. Adds 3 additional ports (you lose 1, you gain 4).

Technical Specifications



4 x Switchcraft EN3P4F (4 female pins)


Switchcraft EN3C4M (4 male pins)

Operating temperature

-20°C to +70°C

Storage temperature

-40°C to +85°C


8.3 x 15.0 x 3.2cm

GP-DU Handheld SDI-12 Sensor Reader

Soil moisture meter

The GP-DU Handheld SDI-12 Sensor Reader is capable of reading current measurement conditions from all GroPoint SDI-12 sensors when not connected to an SDI-12 Logger. Alternatively, it can be used to read data directly from a GP-DL4 SDI-12 data logger.

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Soil moisture sensor product catalog