Carrier Thermostat 

Dual Powered Thermostat 24v AC or batteries+ (batteries included)

Off, cool, heat, and E-Heat

Base 2-5 Day Programable

HP and AC models

Permanent Memory

Serial numbers:

TB-PAC01-A

781897

2V781897

Week code: 3114

FG-CNTL/TSTAT/CARRIER/NON/AC