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Power module
To thermostat
To HVAC control board
The C-wire is used to provide power to the thermostat. If your system does
not have "C" wire, you can use the power module to power your thermostat
using the exiting wires.
There are two sides with connections. One side (4 terminals) is for
thermostat connections, the other side, pre-wired (5 terminals), is for the
control board connections.
Description: