Impossible To Find In New/Unused Condition. Vermont Castings HONEYWELL RT8220A RF Transmitter - 20002047 - NOS NEW. The item "Vermont Castings HONEYWELL RT8220A RF Transmitter 20002047 NOS NEW" is in sale since Monday, April 1, 2019.This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Fireplaces & Stoves\Replacement Parts"." and is located in Westport, Connecticut. This item can be shipped to United States.