The PRO programmable series provides 24 Vac control for conventional and heat pump systems.

Honeywell TH4210D1005 Programmable Thermostat for 2 Heat/1 Cool Heat Pump Systems.

Honeywell PRO 4000 Thermostat features an easy-to-read display and 5-2 day programming. Honeywell PRO 4000 series offers a basic thermostat with the benefits of energy savings.

Features:

Weekday/Weekend programming - 5-2 (Weekdays, Weekend) programming;
Backlit digital display - both current and set temperatures are easy to read in various lighting conditions;
Precise comfort control (+/-1F) - maintains consistent comfort to the highest level of accuracy;
Basic operation - easy-to-use slide switches allow you to select the heat or cool mode, and operate the fan;
Built in instructions - simple, pull out instruction manual;
Adaptive Intelligent Recovery - ensures programmed temperature is reached by programmed time;