Rctd-031 !new! -

| Q | A | |---|---| | | ±0.2 °C (±0.5 °F) after factory calibration. | | Can I use the RCTD‑031 in a freezer? | Yes, if the ambient temperature stays above the device’s minimum rating (‑20 °C). For sub‑zero operation, use the “Cold‑Mode” firmware option (v2.3+). | | Is the device compatible with smart‑home platforms? | The app can bridge to IFTTT , Home Assistant , and Alexa via MQTT (enable in Settings → Integrations). | | How long does the internal battery last? | The backup battery provides ~30 minutes of operation after AC loss – enough for a safe shut‑down. | | Can I run multiple units on the same network? | Yes; each unit gets a unique MAC address. The app lists them by serial number . | | What warranty does RCTD‑031 have? | 2‑year limited warranty covering defects in materials and workmanship. Register online within 30 days for full coverage. | | Is there a way to lock the settings? | In the app → Settings → “Admin Lock” → set a 4‑digit PIN. This prevents accidental changes on the front panel. |