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Grain bin monitoring

See inside every grain bin from wherever you are

Grain stays in steel bins for months after the harvest, and heat can build up deep inside, where nobody sees it until the grain spoils. Our device reads temperature cables hanging through each bin and reports from the bin roof, with no power line.

How it works

From the grain to your app

Temperature cables

Up to 150 sensors through the grain

1-Wire

HARDWARIO

CHESTER

Our IoT device, here solar powered

LTE-M

HARDWARIO Cloud

Keeps the readings, passes them on

Webhooks

Your app

Shows each bin, can run aeration

Ready to order

Device, firmware and cloud

The GrainLink unit: CHESTER in an enclosure with a row of cable glands for the temperature cables
  1. Device

    CHESTER on a carrier board, in an enclosure made for the bin roof.

    • Solar powered
    • LTE-M
  2. Firmware

    The Clime catalog application reads 1-Wire probes, adapted to your cables.

    • Up to 150 sensors
  3. Data

    HARDWARIO Cloud keeps every reading and passes it on to your app.

    • Webhooks
    • REST API
A GrainLink unit encrusted in hoar frost on the railing of a snowy grain bin catwalk
A GrainLink unit under hoar frost on a bin catwalk.

Reference

GrainLink runs its grain monitoring on our units

We developed the GrainLink unit on CHESTER, with a carrier board, firmware and enclosure for the bin roof, and tested it in the climatic chamber of our workshop in Liberec. Eight months passed from the first contact to a validated solution; in 2026 GrainLink ordered the next generation.

1 000+

GrainLink systems delivered in Canada and the USA

Read GrainLink reference

Adapted for you

We designed it, so we can change it

CHESTER in its white enclosure with the HARDWARIO logo
The GrainLink unit: CHESTER in its own enclosure with the GrainLink name on the lid
Standard CHESTER Adapted for GrainLink

The GrainLink unit is our design, adapted. Tell us your cables, your bins and your brand, and we adapt it for you.

  • Carrier board
  • Firmware
  • Enclosure
  • Solar power
  • Aeration control

Need a grain monitor of your own design? HARDWARIO Engineering develops it to your specification.

Plan your bins with us

Tell us how many bins you monitor and what your customers need to see, and we will plan the units with you.

We reply within one business day.

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