Drill & Drop

Easy installation, accurate soil moisture, salinity and temperature measurement.

The Drill & Drop probe is fully encapsulated and can be completely buried, reducing the risk of machinery damage.


Soil moisture and temperature, with salinity optional.


Vegetable crops, Fruit & Nut tree crops, Vines, Berries, research, and landscapes.
drill and drop sentek

Sentek Smart

Tapered shape allows for fast and efficient installation and extraction.

Probe Features

  • Undisturbed installation allows for measurement of truly representative soil profile, NOT slurry mix.
  • Buriable to any depth to allow working upper soil layer.
  • Durable low maintenance equipment will last for years.
  • Pre-calibrated sensors provide accurate readings in majority of soil types, with software that can make adjustments as needed.
  • Access near real-time soil profile data through online software IrriMAX Live – from any device.
  • Available with moisture, temperature and optional salinity sensors at every 10cm (4”) depth.


  • Ideal for seasonal use, such as monitoring vegetable crops, due to the fast and easy install and extraction techniques.
  • Reliable option for long-term use, as it can be installed and left untouched for many years.
  • Fast and undisturbed, slurry-free installation improves the validity of readings.
  • Combine soil moisture, salinity and temperature readings for a complete picture of what’s happening in the soil profile..

The Drill & Drop probe is available in lengths from 30cm (12″) through to 120cm (48″) with sensors every 10cm or four inches. 

It is also offered as a Single Point Sensor measuring 10.5cm or 4″ for SDI-12 loggers.


Drill & Drop probes consists of a probe rod with integrated electronics and associated cables. Two probe types are available RS232/RS485 or SDI-12:

·         RS232 communication to a Sentek PLUS DTU

·         RS485 communication to a Sentek MULTI DTU

·         RS232 or RS485 to a third-party Modbus logger

·         SDI-12 communications to a third-party SDI-12 logger.

The Single Point Sensor is available with SDI-12 connection only, for communication to a third-party SDI-12 logger.


NEW! Series III Drill & Drop probes:

  • The RS232/RS485 probe is preconfigured with the firmware appropriate to the DTU to which it will be connected i.e. Sentek PLUS, Sentek MULTI, Modbus RS232 or RS485 third party loggers.
  • You can change the probe type (RS232 or RS485) by uploading new firmware into the probe (see manual for details)

Super quick installation video

Detailed installation video

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