Honeywell T4 Pro User Manual page 7
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Also See for T4 Pro:
- Installation instructions manual (36 pages) ,
- Installation instructions manual (37 pages) ,
- Installation instructions manual (37 pages)
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Read before installing Thermostat controls
The screen will wake up by pressing any of the five buttons. If powered by the C wire, the screen stays
lit for 45 seconds after you complete changes. If powered by battery only, the screen stays lit for 8
seconds. Depending on how your thermostat was installed, the screen light may always be on.
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