ICM Controls SC5811 Thermostat Els PW 17895 Its moisture resistant insulation and precision fired Its moisture resistant insulation and precision fired heating element provide the durability needed for demanding heating seasons without the risk of premature failure typically seen in aftermarket knock offs OEM Compatibility: Genuine Carrier HH19ZH210 ensures proper fitment and performance in compatible furnace and air handler models this is a hardwired thermostat that uses permanent memory to store all programmable schedules and installer settings without the need for periodic battery replacement Built for versatile scheduling