Titan Controls Atlas 1 #702616 CO2 Monitor/Controller (Error Code) PARTS/REPAIR

Description

Titan Controls Atlas 1 #702616 CO2 Monitor/Controller (Error Code) PARTS/REPAIR.
PLEASE READ THE ENTIRE POSTING BEFORE CONSIDERING PURCHASING
Up for sale is a Titan Controls Atlas 1 #702616 CO2 Monitor. The unit powers up, goes through a few numbers, then shows err. I don't know if it needs the sensor to be able to function properly. I don't know anything about this item. It belonged to my uncle and it was in his storage that we're clearing out. Because of the mentioned issue, the unit is selling strictly AS IS and FINAL for PARTS OR REPAIR.
Buttons do feel solid and clicky.
PLEASE carefully check out all the pictures before you consider purchasing.  Zoom in on pictures for details.
The item is selling AS IS and FINAL.
Please make sure you are OKAY with the descriptions provided before you bid.
BE AWARE:
I use eBay's shipping system and they determine the cost based on your address.
SOLD AS IS and all sales FINAL.
ITEM SHIPPED WILL INCLUDE ONLY WHAT IS ON THE PICTURES.
SERIOUS BUYERS ONLY PLEASE!!!!
FOR ANY REASON, COST OF ANY SHIPMENTS BACK WILL BE YOUR RESPONSIBILITY.
I will take Pay Pal or eBay approved payment only. I require
IMMEDIATE PAYMENT
upon the end of the auction. Will ship within the Contiguous U.S. ONLY.
NO P.O. BOX Shipping.
Shipping outside of U.S. will need to go through eBay Global shipping program so please make sure your address qualifies.
As soon as payment clears, I will ship the item within 3 business days but it is usually one. No reserve on this item so the highest bidder wins.
Please make sure to open the package as soon as the item arrives to ensure the condition and all contents are as described.
I strive for the best service possible. If you have any issues, please contact me first before opening a case so we can work out a pleasant resolution.  I have high respect for buyers so please give me the same courtesy.  Thanks and happy bidding.