DSC-BRAIN USER GUIDE · SETTINGS REFERENCE
Settings › Sensors
What a reading is trusted to mean: leaf offset, per-zone offsets, clamps, DHT disagreement, peer drift, placed-sensor stale window, runoff hold, fast-reading triggers and holds, control-side stale horizon.
● verified for 9.0.0 · firmware train 8.2.0.0
● last verified 2026-09-17 · mirrored 2026-09-15
What a reading is trusted to mean. Per-zone offsets, the leaf-to-air assumption, and the clamps behind every number.
Offsets (Brain scope)
| Row | What it does |
|---|---|
| Leaf-to-air offset (°C) | How much cooler a leaf is assumed to be than the air, for leaf VPD. Default 2 °C on the brain. |
| Room / 4×8 / 2×4 sensor offsets | Temperature and RH offsets applied to each zone's hub sensor before anything is judged. |
| Sensor clamps (advanced) | Plausible bounds per channel; a reading outside is rejected, not smoothed, and raises climate reading rejected. |
Trust
| Row | What it does |
|---|---|
| DHT disagreement thresholds | Temperature and RH deltas beyond which the two tent DHTs are called disagreeing (an alert that pairs the zones). |
| Peer drift thresholds (pH, EC, moisture) | Median absolute deviation from the probe peers before a channel is flagged drifting. |
Placed sensors
- Placed sensor stale window: minutes of silence before a Zigbee or Tuya placed sensor's reading is dropped from canopy and deltas.
- Runoff sitting hold: minutes a runoff tray may read wet before sitting in runoff is raised.
Fast reading
The probes poll on a ladder: slow at rest, fast while something is happening.
- Fast reading triggers: moisture step %, moisture slope, EC slope that switch a probe to fast polling (READING FAST on Root).
- Fast reading holds: how long fast polling stays after the trigger releases, after a logged event (a Water entry), and after a probe comes back.
Control
- Control-side stale horizon: how old a hub reading may be before the appliance driver treats it as missing and forces the Sonoff relays OFF. 45 seconds; shown for transparency.
DSC-Brain user guide · Settings › Sensors · this page is edited on the site; the Notion original was retired after the mirror