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CTC Model 43503 Programmable 1 Heat / 1 Cool Thermostat

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CTC Model 43503 Programmable 1 Heat / 1 Cool Thermostat

Finalist in "best programmable thermostat" category  - in article published by major consumer products magazine!

The Model 43503 7-day Programmable, auto changeover thermostat offers EPA ENERGY STAR® certified performance and state-of-the-art features at an affordable price. This new model is preprogrammed for instant savings by the user, is simple to customize for each individual's comfort requirements and has a large, easy to read INDIGLO® night light display. System compatibility is assured by Climate Technology's "Clean Contact" design and has been verified through extensive NEMA testing. This new CTC model is sure to be a winner in today's residential and light commercial markets.


. Latching relay assures system compatibility
. Auto Programming with easy-to-change presets
. Large, easy-to-read INDIGLO night light display
. Intelligent auto recovery feature
. Span selector switch - adjustable differential up to 2 degrees.
. Energy monitor - measures and stores the amount of time the heating and air conditioning system operates.
. Keyboard lock
. Easy "Front Load" battery access
. Filter use monitors
. Patented "Home Today" temporary override
. Vacation "Hold" override
. Low battery indicator
. °F/°C selector
. 3-year warranty
. Powered by 2 AA batteries (included)

Compatible with most-
. 24 VAC heat/cool, heat only or cool only systems
. Gas, electric or oil systems
. Millivolt systems
. 2 wire hydronic systems
. Single-stage heat pumps (Not for use with 110V/220V systems!)

. 20-30 VAC, 50/60 Hz
. Current draws 0.1 to 1.5 amps
. Temperature set range: 40°-95° F (5°-35° C)
. Operating differential ± 1° F
. Compressor protection: 4 min.delay on break
. Terminations: RC, RH, W, Y/Y1, G, O/B)
. Dimensions - 6.5" W X 4.5" H X 1.5" D