If you're looking for the good quality PTAC Smart thermostat, you've come find the correct website. E-Top PTAC thermostats features an assortment of user-friendly digital home thermostats which will guaranteed to give you the control you desire over your portable AC system.   Manufactured by high-quality AC brands like Amana, Carrier, and Friedrich, you can trust E-Top digital RF TPAC thermostats to deliver reliable performance time and time again. We carry a variety of programmable and non-programmable options to meet your unique demands, as well as an assortment of thermostat connection kits to make installation a breeze.   The E-Top PTAC CH7400 are featured with the wireless 868Mhz radio and offers 8 standard terminals contacts as below, Typical 1H/1C Heat Pump System Typical 2H/1C Heat Pump System:  For more details PTAC thermostat installation question, please feel free to drop an email to info@etopcontrols.com