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TopTech TT-P-421 5-2 Day Programmable Thermostat
Up to 2 Heat / 1 Cool Conventional & Heat Pump Digital Thermostat
5-2 Day Separate Weekday / Weekend Programming
Dual Powered -Hardwired or Battery
Compatible with 24 VAC Gas, Oil, Electric, Heat Pump and Millivolt Systems
Large Display with Bright Blue Backlight
O and B Terminals
Filter Check Monitor
Works fine. Was installed in vacation home but programmable type wasn't suitable for home's use. Comes with original box and instructions. Two AA alkaline batteries are not included.
Please ask any questions before offerding.