ADD-A-WIRE™
              
                In applications where additional wiring cannot be run, the
                Add-A-Wire accessory can be used to add a wire to the
                thermostat.
              
              
              
                Product Overview
                
                  - Easy to install
- Easier than running new wire
- Allows 5 wire thermostats to use only 4 wires
- Also allows 5 wires to work like 6 wires
- MODEL: ACC0410