Helpdox

All products

Search docs…⌘K

Sign in Open a ticket

Firmware 4.2.1 is rolling out

Set up, fix and protect your Halo

Setup guides, manuals, firmware and warranty for Halo Thermostat and Halo Doorbell.

Popular: Wiring Wi-Fi setup Error E74 Warranty

Halo ThermostatSmart thermostat · Model HT-200 Halo DoorbellVideo doorbell · Model HD-2Find your model

Get it done yourself

Setup guidesWiring diagrams and step-by-step installs.
ManualsPDF manuals for every model and revision.
WarrantyCheck coverage and start a claim.
Returns30-day returns with a prepaid label.

Halo Thermostat

Browse by topic

Setup & wiringCheck compatibility, wire the base and finish setup.

App & Wi-FiConnect to Wi-Fi and control Halo from your phone.

TroubleshootingBlank screens, error codes and offline devices.

Warranty & returnsCoverage, claims and returns within 30 days.

Downloads

Manuals & firmware

Always the latest revision. Firmware installs automatically over Wi-Fi — download only for offline updates.

Halo Thermostat — quick start guideManualPDF · 1.2 MB · Rev. C
Halo Thermostat — installation & wiring manualManualPDF · 6.8 MB · Rev. C
Halo Doorbell — user manualManualPDF · 4.1 MB · Rev. B
Thermostat firmware 4.2.1FirmwareBIN · 22 MB · Oct 2026
Doorbell firmware 2.9.0FirmwareBIN · 31 MB · Sep 2026
Declaration of conformity (FCC / IC)CompliancePDF · 0.4 MB

24-month warranty

Warranty

Is my device covered?

Every device includes a limited warranty from the date of purchase. Enter yours to check.

Talk to a Halo expert

Phone and chat 7 a.m.–9 p.m. Central, seven days a week.

Start a warranty claimReplacement ships in 2 business days.Call 1-800-555-0142Average wait under 3 minutes.Find an installerCertified Halo Pros near you.