We provide documentation-based support for UPM legacy products.

Before you contact us

• Have your model number and SKU ready (shown on the product page).
• Thermostats: confirm your system is low-voltage (typically 24VAC). Take a clear photo of existing wiring before changes.
• Monitors/Sensors: replace batteries first and test again.

Common quick fixes

• Blank/dim display: replace batteries (where applicable).
• Inaccurate readings: keep monitors away from vents, direct sunlight, and heat sources.
• Thermostat not controlling HVAC: confirm terminal wiring and system compatibility (24VAC low voltage).

Contact

Email: support@ltlucid.com
Response time: 1–2 business days

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