(based on 4 ratings)

CTC Model 43855 Programmable Touchscreen Thermostat with Humidification Control Universal Auto Changeover Up to 3 Heat / 2 Cool, with Humidification Control / Programmable or Non-Programmable Features: * Latching relay assures system compatibility * Pre-programmed with easy-to-change presets * Simultaneous Time and Temperature visibility for easy programming * Large, easy-to-read display for clear, wide-angle viewing * Auto season changeover * Humidity sensing and control * Refresh programmable fan - fan runs on set interval if the system does not cyle fan for 1 hour * 7-Day program with choice of 2 or 4 program periods per day. Can also be converted to non-programmable * Keyboard lock * Filter Monitor * Energy Monitor * “System On” indicators * Auto heat recovery * “Clean Screen” function * Patented “Home Today” override * Temporary and Vacation Hold override with Programmable Hold * AC or battery powered. 3 AA batteries included. * Low battery warning * Ambent display glows red or blue when screen is touched depending on operating mode (continuous backlighting not available) * 3-year warranty Compatible with most: - Up to three-stage heat/two-stage cool conventional and heat pump systems - Single-stage heat pumps - Gas, electric or oil systems - Millivolt systems - 2-wire hydronic systems - AC or hardwired (Not for use with 110V/220V systems) Specifications: - Output Load: 20–30 VAC, 50/60 Hz, .1-1.5 Amps - Current draws: 2.0 Amps max per terminal. 4.0 Amps Max overall. - Temperature display limits: 15°–99° F (-9°C–37°C) - Temperature set range: 45°–95° F (5°–35° C) - Operating differential: ± 1° F - Humidity display limits: 20%–90% RH - Compressor protection: 4 min. delay on break - Terminations: RH, RC/R, C, Y1, Y2, W1, W2, W3, E, O/B, G, L, H - Product Dimensions: 6" W x 4 5/8" H x 1 3/8" D