C-wire requirement flexibility

Reviews say the thermostat can be installed without a C-wire, though another notes you can still use a common wire if you have one.

The included power extender kit is framed as helpful for setups that do not have a common wire.

The thermostat still expects a common wire, but the supported adapter path makes installation more flexible than a strict C-wire-only design.

Every installation-focused review says a C-wire is required, though several note separate adapter or extender-kit workarounds.