TEROS® ONE

The only substrate sensor designed exclusively for cannabis.

One sensor. Three metrics. No weaknesses. TEROS^® ONE’s new design completely reimagines how substrate data is collected, giving cultivators precise and accurate readings in EC zones other sensors simply can’t measure at all.

With TEROS ONE, we’ve raised the bar. Again.

⚡

Electrical conductivity
(dielectric pore water EC)

🪣

Volumetric water content

🌡️

Temperature

Master precision irrigation. Dial in drybacks. And now, make powerful, reliable data comparisons – an industry first. TEROS ONE’s breakthrough technology unlocks reliable data comparisons that used to be impossible.

Compare harvest groups from different facilities. Compare two runs of the same strain grown at different times. Compare readings taken from two different substrate types.

And that’s only the beginning – substrate sensing this powerful makes steering crops a breeze.

Comparison charts showing TEROS ONE sensors with linear accuracy, previous TEROS sensors with nonlinear results, and knockoff sensors with inconsistent curves

Unparalleled EC and WC accuracy. EC levels are heavily influenced by soil salinity and soil moisture – but high EC levels confuse other sensors' ability to accurately measure moisture levels.

TEROS ONE’s new design separates water content and electrical conductivity measurement, eliminating sensor confusion and giving cultivators unprecedented WC and EC accuracy – even in extreme irrigation situations.

Precision at extreme salinity levels. When pushing for max yield and quality, indoor cannabis cultivators often push EC levels far beyond what other plants (and other sensors) can handle.

TEROS ONE is the only cannabis substrate sensor capable of precise primary pore water EC measurements up to 20 dS/m – a range wide enough to cover even the most extreme drybacks and then some.

Which substrate is best? Yours.

Many substrate sensors were developed for soils, then adapted to work with indoor grow media. Not TEROS ONE. It’s built specifically for indoor substrates, giving growers the flexibility to switch media at a whim without needing to throw out their past data.

Data all day. And all night.

Once you’ve installed the TEROS ONE, the data never ends. You’ll get fresh readings every three minutes, 24/7, even if you aren’t nearby. TEROS ONE syncs data automatically to the AROYA platform, so you can check in and get real-time data and visualizations anytime, anywhere.

Pair of TEROS ONE soil sensors linked to a white AROYA device for wireless data network crop insights

Tough enough to handle it. All of it. TEROS ONE is adapted from environmental research sensors, built for use in extreme conditions with no maintenance.

Close-up of AROYA alignment board marked with depth measurements for correct sensor placement in grow bags and blocks

No plug, just play. There’s just one piece to the TEROS ONE – no ethernet cables, no internet setup, no plugs. Simply use the AROYA app to scan the sticker on the TEROS and it links up seamlessly.

Repeatable data, grow after grow. The included TEROS ONE alignment tool helps you place your sensor perfectly every time. Works in soil, soilless mixes, coco, and Rockwool, right out of the box. No need for user calibration.

TEROS ONE takes “set it and forget it” to the next level. It’s built with resilient epoxy fill, corrosion-resistant stainless steel needles, and a 5+ year battery life.

Specifications

Relative Dielectric Permittivity	Frequency: 70 MHz Range: 1 to 80 (tested) Resolution: 0.1 Accuracy: ± 3 % (for 0 < EC < 15 dS/m)
Electrical Conductivity	Frequency: zero (estimated from values measured at 70 MHz) Range: 0 to 20 dS/m (tested) Resolution: 0.001 dS/m Accuracy: ± 2 % or ± 0.05 dS/m (for 0 < EC < 20 dS/m)
Temperature	Range: -40 to +60 °C Resolution: 0.1 °C Accuracy: ± 0.3 °C
Volumetric Water Content *	Range: 0 to full saturation (porosity for RW » 95 %) Resolution: 0.001 m3 / m3 Accuracy: ± 0.05 m3 / m3
Electrical Conductivity of the Water Phase (ECpw) *	Range: 0 to 15 dS/m (tested) Resolution: 0.001 dS/m Accuracy: ± 5 % or ± 0.1 dS/m (for 0 < EC < 15 dS/m and 0.15 < VWC < saturation)
Other	Material: ASA Plastic Measurement Interval: 3 minutes Power: Embedded Lithium Battery, 5+ year life.

*While they are strictly valid for Rockwool, the estimates above reasonably apply to all inert materials with very high porosity, such as peat moss or organic substrates made from coco fibers.

TEROS® ONE

The only substrate sensor designed exclusively for cannabis.

One sensor. Three metrics. No weaknesses. TEROS^® ONE’s new design completely reimagines how substrate data is collected, giving cultivators precise and accurate readings in EC zones other sensors simply can’t measure at all.

With TEROS ONE, we’ve raised the bar. Again.

Which substrate is best? Yours.

Data all day. And all night.

Tough enough to handle it. All of it. TEROS ONE is adapted from environmental research sensors, built for use in extreme conditions with no maintenance.

TEROS ONE takes “set it and forget it” to the next level. It’s built with resilient epoxy fill, corrosion-resistant stainless steel needles, and a 5+ year battery life.

Specifications

Relative Dielectric Permittivity

Electrical Conductivity

Temperature

Volumetric Water Content *

Electrical Conductivity of the Water Phase (ECpw) *

Other

Ready to grow?

Next steps:

Let's get started

TEROS® ONE

The only substrate sensor designed exclusively for cannabis.

One sensor. Three metrics. No weaknesses. TEROS® ONE’s new design completely reimagines how substrate data is collected, giving cultivators precise and accurate readings in EC zones other sensors simply can’t measure at all.With TEROS ONE, we’ve raised the bar. Again.

Which substrate is best? Yours.

Data all day. And all night.

Tough enough to handle it. All of it. TEROS ONE is adapted from environmental research sensors, built for use in extreme conditions with no maintenance.

TEROS ONE takes “set it and forget it” to the next level. It’s built with resilient epoxy fill, corrosion-resistant stainless steel needles, and a 5+ year battery life.

Specifications

Relative Dielectric Permittivity

Electrical Conductivity

Temperature

Volumetric Water Content *

Electrical Conductivity of the Water Phase (ECpw) *

Other

Ready to grow?

Next steps:

Let's get started

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One sensor. Three metrics. No weaknesses. TEROS^® ONE’s new design completely reimagines how substrate data is collected, giving cultivators precise and accurate readings in EC zones other sensors simply can’t measure at all.

With TEROS ONE, we’ve raised the bar. Again.