live · Cold Chain

The cold room that keeps its own record.

Cold rooms, freezers and pharma stores, each with its band. Every stretch outside it becomes a record — when, how warm, for how long, the door, the defrost, who acknowledged it, the reason, who signed. The inspector gets the record as one download.

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Frostmere Cold Store · its twinlive

At its warmest

7.4°C · Chiller A

The door

66s open

Arrived late

4readings · kept as history

RuleA defrost within its allowance is neither an alarm nor an excursion; one past its allowance is.

09:50:16Chiller A is above its band: 7.4 °C at its warmest, for 1 min
reasonloading · proposed door left open, corrected by a person
signedSigned off · on the record

What the twin holds: bands · excursions · reasons · sign-offs · mapping · historydemo run · the company’s own time

1The problems

In the operator’s words.

“The chart recorder says it got warm. Nobody can say why.”

Each excursion is recorded with the door’s state and any defrost during it; the likely cause is proposed (a door left open, a defrost run long), and a person gives the reason.

Outcome An excursion is explained on the day, not reconstructed at the audit.

“A defrost sets off the alarm every single night.”

A defrost within its allowance is neither an alarm nor an excursion; one past its allowance is.

Outcome The alarm means something again.

“The readings arrived late after the outage and the alarms went off at 9 a.m.”

Readings that arrive late are history: stored, counted, never alarmed after the fact.

Outcome No one chases a warning that is already over.

“The inspector wants everything for March, for one room.”

One export per place and period: every reading, every excursion with its reasons and sign-off, every band and probe change, the mapping in force, with a fingerprint per file.

Outcome The record is produced, not assembled.

“Where should the probe even sit?”

A mapping study with placed loggers finds the hot and cold spots and records where the monitor was put, signed.

Outcome The monitor’s position is a decision on file.

2The scene

From the record.

At Frostmere Cold Store, Chiller A went above its band at 09:50:16 — 7.4 °C at its warmest, for 1 min. The door had been open 66 s. HOLOIN raised ‘Chiller A is above its band: 7.4 °C at its warmest, for 1 min’ and proposed the reason door left open. Freezer B’s defrost ran past its allowance: ‘A defrost at Freezer B has run past its allowance (1 min so far)’, reason proposed defrost. Four readings that arrived late after a gap were kept as history and alarmed nothing. The excursion was acknowledged, its reason corrected to loading, signed off, the sign-off undone and signed again — all on the record. The export for Chiller A: 9 files, every fingerprint matching its manifest. The mapping study found the cold spot door side, middle shelf and the hot spot back wall, top shelf; the monitor sits where the study chose.

Chiller A’s excursion record in HOLOIN: when it was out of its band, for how long, its peak, the doors open, no defrost, the proposed reason Door left open; and what is in force — acknowledged, the reason Loading with its note, signed off, with the product’s line that a sign-off is not an electronic signature. — **From a demo run:** Chiller A’s excursion — how long, its peak, the door, the proposed reason — and what is in force: acknowledged, the reason Loading with its note, signed off.

Freezer B’s excursion on the phone: when, how long above its band and its peak, the proposed reason Defrost, not acknowledged and no reason given yet, the Acknowledge button and the reasons to choose from. — **From a demo run:** Freezer B’s excursion on the phone, waiting for a person: Acknowledge, and the reasons to choose from, defrost proposed.

Chiller A’s cold-chain panel while its excursion is open: critical, decided by the open excursion; its band; the reading above the band; the excursion open and not acknowledged; a door open past its limit. — **From a demo run:** Chiller A while its excursion is open: critical, above its band, a door open past its limit, not yet acknowledged.

Chiller A’s export panel: what the zip of the place’s record holds — the temperature log, the excursions with every entry, the receipts, the bands, the calibrations and the changes, with a cover sheet and a manifest of each file’s SHA-256 — the period, and Export the record. — **From a demo run:** Chiller A’s export panel: the period, and what the file holds — the record, a cover sheet and a manifest of each file’s SHA-256.

3The four questions

What you actually want to know.

Do I have to install anything?

On your own servers, in the same installation as everything else: a cold place is a room of a building, with its band.

What do I need?

A temperature probe in each place that reaches HOLOIN by any way in — a LoRaWAN logger, a controller on the building network.

Decentlab DL-SHT35 air temperature and humidity sensor verified (simulated)

What does it cost?

Per installation, per year, by device tier: on request. No per-seat fees; every user is included.

Who do I call?

Hours, channel and response time: on request. Every installation can produce a support bundle on demand, a readable archive with no personal data or secrets, which your IT team can check before it goes to us.

4Day one

Place the probes, set each place’s band, alarm delay and defrost allowance, enter the fixed reasons your site uses. The first excursion appears as a record waiting for its reason.

A record, not a certificate: HOLOIN keeps what the rule asks you to keep; whether it satisfies a given inspector is between you and the inspector.
Vehicle compartments (reefers) are not in this release.
Not a controller: HOLOIN reads the probes and never changes a setpoint or a defrost cycle.

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