I have (12) brand new and unused Carrier CO2 Sensors w/ duct aspirator boxes (Carrier kit # CRCBDIOX005A00). These are in the original packaging and have the installation instructions. I am asking $500 each for the kits, but am willing to accept $450 each if someone buys all (12) at once. I will pay shipping charges, as well (within the continental US).

Please price-check these. Call your local Carrier distributor for current pricing on the will probably find them asking at least $550 or more per kit.

Also, this is a current product...not obsolete.