Control Points

Each cold room exposes two control points that decide when alerts fire. Only breaches of these thresholds generate notifications — routine door open/close and normal temperature drift are logged to audit but stay silent.

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How control points work

Alert thresholds — plain English

Temperature Tolerance (±°C)

Absolute deviation from the room setpoint. When any shelf crosses this band a Critical Temperature Deviation alert is raised for that shelf. Tighter values catch drift earlier but trigger more alerts.

Door Open Limit (seconds)

How long a closed-door rack may stay Open or Ajar before a High-severity Door Open Too Long alert fires. Applies only to Closed Door rooms; Open Shelf rooms ignore it.

CR-A · Cold Room A

Open Shelf · setpoint 4°C · 26 racks

Open Shelf

Temperature tolerance

Alert when a shelf leaves 2.5°C → 5.5°C

Fires:Critical · Temperature Deviation

±°C

Door open limit

Not enforced — this room has no rack doors

Fires:High · Door Open Too Long

sec

CR-B · Cold Room B

Open Shelf · setpoint 4°C · 26 racks

Open Shelf

Temperature tolerance

Alert when a shelf leaves 2.5°C → 5.5°C

Fires:Critical · Temperature Deviation

±°C

Door open limit

Not enforced — this room has no rack doors

Fires:High · Door Open Too Long

sec

CR-C · Cold Room C

Closed Door · setpoint -20°C · 20 racks

Closed Door

Temperature tolerance

Alert when a shelf leaves -21.5°C → -18.5°C

Fires:Critical · Temperature Deviation

±°C

Door open limit

Alert after a rack door stays open longer than this

Fires:High · Door Open Too Long

sec

CR-D · Cold Room D

Closed Door · setpoint -20°C · 20 racks

Closed Door

Temperature tolerance

Alert when a shelf leaves -21.5°C → -18.5°C

Fires:Critical · Temperature Deviation

±°C

Door open limit

Alert after a rack door stays open longer than this

Fires:High · Door Open Too Long

sec

CR-E · Cold Room E

Closed Door · setpoint -20°C · 20 racks

Closed Door

Temperature tolerance

Alert when a shelf leaves -21.5°C → -18.5°C

Fires:Critical · Temperature Deviation

±°C

Door open limit

Alert after a rack door stays open longer than this

Fires:High · Door Open Too Long

sec

All changes are attributed to the current signed-in user and written to the audit trail. Session user & role assignments live in Settings.