Honeywell T4 Pro User Manual page 17

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Q: How long does the screen stay lit after making changes to the thermostat?
A: If powered by the C wire, the screen stays lit for 45 seconds. If powered by battery only, the screen stays lit
for 8 seconds.
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Q: How do I cycle through the available system modes?
A: Press the Mode button to cycle through the available system modes.
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Q: How do I set the time and date on the thermostat?
A: Press Menu, then press + to go to TIME. Use + or - to choose between 12 or 24-hour format, then adjust the
hour and minutes.
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