Honeywell TH2210DH1000 PRO 2000 Programmable Thermostat

Low Voltage Thermostat, Stages Heat 2, Stages Cool 1, Temp. Settings per Day 4, Programs per Week 2, Terminal Designations R, C, Y, AUX/E, G, O, B, WiFi Capability No, System Switching Heat-Cool-Off-Emergency, Fan Switching Auto-On, Temporary Program Override Yes, Temporary Temperature Hold Yes, Battery Backup Yes, Low Battery Indicator Yes, Batteries Included Yes, Dual Transformer Compatible Yes, Power Method Hardwired/Battery, Voltage 20 to 30V AC, 750mV Compatible Yes. Display Size: 1.73 sq in. Dimensions (in.): 3 7/16 High x 4 10/16 Wide x 1 3/16 Deep .