Replace existing Honeywell read the link thermostat and module with new Honeywell red link thermostat and module. 11-14-22-PT. Installed a new Honeywell home wireless thermostat kit. I removed the old thermostat and module. I installed the new module to the back of the return duct and wired it to the board. I then mounted and connected the thermostat to the module. I tested the system for heat and proper operation. The system is operating properly at this time.