TH1110DH1003

The brochure table lists TH1110DH1003 as a PRO 1000 horizontal non-programmable thermostat for 1 Heat/1 Cool, in the same PRO 1000/2000 family as the vertical TH1110DV1009. The brochure describes Honeywell Home PRO 1000 non-programmable thermostats by Resideo for multi-family housing and apartments. It calls out dual power from a battery and/or hardwire, a clear backlit digital display, and a 2-year warranty. This page already describes the model as horizontal, backlit, 1H/1C, and dual powered.

The linked product overview identifies TH1110DH for 1 Heat/1 Cool systems. The installation guide covers TH2110DH/TH1110E1/TH1110DH for 1 Heat/1 Cool. System types listed for that group include gas, oil, or electric heat with air conditioning; warm air, hot water, high-efficiency furnaces, 1 Heat/1 Cool heat pumps, steam, and gravity; heat only; heat only with fan; cool only; and 750 mV heating systems. The guide says to use 18- to 22-gauge thermostat wire and that shielded cable is not required. It says the thermostat must be installed by a trained, experienced technician.