Thermostats USA
Source 1 Add-A-Wire


In applications where additional wiring cannot be run, the Add-A-Wire accessory can be used to add a wire to thermostat.

Source 1 Add-A-Wire - S1-ADDWIRE

The Add-A-Wire accessory enables installers and homeowners to utilize 5 wire thermostats when only 4 wires are available.

  • Easy installation
  • Easier than running new wire to equipment
  • Allows 5 wire thermostats to use only 4 wires
  • Also allows 5 wires to work like 6 wires

Download Manual & Submittal: