Sensi Common Wire Kit

Sensi Common Wire Kit

Sensi Common Wire Kit
PRICE $27.99
Please select a thermostat

In stock


No C-wire? No problem! The Sensi Common Wire Kit allows you to install the Sensi smart thermostat and Sensi Touch smart thermostat with only 4 wires. It also allows 5 wires to replace 6 wire applications. 

In the box

  • Sensi Common Wire Kit
  • 1 Diode 'Y'
  • 4 Wire Nuts


  • Allows 5-wire thermostats to use only 4 wires. Also allows 5 wires to work like 6 wires.
  • Easy solution to making the Sensi thermostats compatible with your system when running an additional wire is not an option. Always check compatibility with your HVAC system before purchasing.
  • Does not work with 2-wire systems.


Location: The Sensi Common Wire Kit can be mounted inside the HVAC unit or inside the control box. The Sensi Common Wire Kit should not be installed in a location where the accessory or wiring may be exposed to the elements.

Wiring Requirements: The Sensi Common Wire Kit has the following requirements:

1) All system wiring must be in compliance with all applicable local and national codes.

2) All wiring should be color coded in conformance with standard recommendations.

3) All wiring should be 18- 22-gage, unshielded wire. The maximum distance between the accessory and the thermostat for 18-gage wire is 100ft. The maximum distance between the accessory and the thermostat for 22-gage wire is 36 ft.

For additional installation information, please visit the Sensi Common Wire Kit Installation Guide.