programmable thermostat, 7, 5, 2 or 1 days carrier silver color carrier edge tp-prho1-a top performance programmable high quality thermostat/thermidistat, pro grade . item made in usa. item is new and in original packaging. please read all pictures closely as to information, and key numbers or manufacture codes or dates. number 1 seller for brand new edge on ebay. considered a top of the line performance product. look at what these are usually selling for by contractors or retail. if you do research you will find this is priced as a wholesale product. this model does it all on your household and commercial needs. this is truly a top quality product. this model has a unique designed feature which allows you to use a digital reader card to make adjustments on computer. the expansion port computer interface memory card is not included. the unit is still fully programmable. you can also use this model as a humidity controller for your living space. this is a premium model that is capable of almost anything you want to set , adjust, and control. will combine shipping on multiple orders. please read booklet on use of stand off.. all included with instructions and complete parts for this top of the line thermostat.stand off and outdoor temp sensor included w this model carrier edge tp-prh "tutor" top performance programmable high quality thermostat/thermidistat, pro grade item pkg is same as edge tpprh01a. item made in usa. item is new and in box. please review all pictures closely .. considered a top of the line performance product,, but now discontinued being made by carrier. ..look at what these are usually selling for by contractors or retail.. do your research. this model does it all on about anything.but zone.carrier is now gone into manual and wifi thermostats/thermodistat.