The Lux Power Bridge (LPB) is a c-wire replacement solution for HVAC systems with 4 wires. It work by combining both the fan and cooling signal from the thermostat on to a single wire, thereby releasing a existing wire to be used as the system common (C-wire).

• 24VAC systems with a fan (G) and cool (Y) wire but lacking a common (C) wire
• Not compatible with 120V/240V line voltage systems

English User Manual

Spec Sheet