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Honeywell RTH9585WF1004/W Wi-Fi Smart Color Programmable Thermostat, V. 2.0,"C Wire Required

Honeywell RTH9585WF1004/W Wi-Fi Smart Color Programmable Thermostat, V. 2.0,"C Wire Required

Q: What is the difference between this model and older rth9580wf?

I contacted Honeywell about this. This is their response: "RTH9585 is a newly launched model with a slightly different user interface than RTH9580WF. Also, RTH9585WF has an additional feature of temporary schedule changes wherein you can adjust the Wake, Leave, Return or Sleep periods based on special requirements such as when you wish to activate return period earlier than usual or when you wish to delay the sleep period."

Q: does this thermostat requires "C" wire?

In an HVAC system there is a step-down transformer that takes the 240VAC or 120VAC and steps it down to 24VAC. The primary side of the 24VAC is what has always been connected the R terminal of a thermostat. The secondary side of the 24VAC transformer was not. It is this secondary side of the 24VAC that is needed by newer thermostats. In fact the newer thermostats are powered by the 24VAC. That secondary side is what is connected to the C terminal. If your cable has a spare unconnected wire. It could be connected to the secondary of the transformer and then to the C terminal. To see if it is there but but not connected, us a VOM and set for AC Voltage, put one lead on the R terminal, and the second lead to each unconnected wire(s), one at a time. if it shows 24VAC +/- 4VAC, you found the secondary side. All other wires will show OC or open. That secondary side wire is the C wire

Q: Does this thermostat have a screen lock to prevent guest from tampering with the settings?

Yes, upper and lower limits can be set. Couldn't find anything online to see how to adjust. Chatted with customer service. The thermostat needs to be unlocked. Then press settings in the upper right of the main screen, Scroll down to preferences, and choose advanced preferences. Press next until the temperature limits screen. Adjust. Limits apply to all three modes unlocked, partially, and fully locked.

Q: How does this sense the outside temp and humidity?

It displays outside temp and humidity, but these are local weather conditions from the internet, not sensors at your house.

4.3/5

Product ID: 256537298

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Details

Brand
Honeywell
Controller Type
Push Button
Special Feature
Programmable
Colour
Grey
Temperature Control Type
Heating
Connectivity Technology
Wi-Fi

⚡Efficient 120V power

🎨Vibrant color touchscreen

📶Seamless Wi-Fi connectivity

Frequently Bought Together

Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready

THP2400A1027W Thermostat Wall Plate Back Plate White Cover Assembly (1)

Honeywell Home RENEWRTH9585WF Wi-Fi Smart Color Thermostat (Renewed)

Description

🌡️ Stay ahead of the curve with smart climate control!

SLEEK MODERN DESIGN - Matte grey finish and rectangular shape blend seamlessly into any contemporary space.
SMART WI FI CONTROL - Manage your home climate from anywhere with reliable wireless connectivity.
VIVID COLOR DISPLAY - Intuitive, modern touchscreen interface that elevates your wall aesthetic.
EASY WALL MOUNT INSTALLATION - Streamlined setup with C-wire support for consistent power and performance.
PRECISION TEMPERATURE MANAGEMENT - Fine-tune heating and cooling for ultimate comfort and energy savings.

The Honeywell RTH9585WF1004/W is a Wi-Fi enabled, color touchscreen programmable thermostat designed for precise heating and cooling control. Featuring a sleek matte grey finish and modern rectangular design, it requires a C-wire for power and supports seamless remote management via Wi-Fi, making it an essential upgrade for smart homes focused on comfort and energy efficiency.

Specifications

Brand	Honeywell
Controller Type	Push Button
Special Feature	Programmable
Colour	Grey
Temperature Control Type	Heating, Cooling
Connectivity Technology	Wi-Fi
Power Source	Battery Powered
Item Weight	0.45 Pounds
Voltage	120 Volts
Shape	Rectangular
Display Type	color
Finish Type	Matte
Control Type	Button Control
Control Method	Touch
Connectivity Protocol	Wi-Fi
Mounting Type	Wall Mount
Style	Modern
Backlight	No
UPC	085267911313
Global Trade Identification Number	00085267911313
Item model number	RTH9585WF1004/W
ASIN	B075BF6V58

Have a Question? See What Others Asked

What is the difference between this model and older rth9580wf?

does this thermostat requires "C" wire?

Does this thermostat have a screen lock to prevent guest from tampering with the settings?

How does this sense the outside temp and humidity?

Common Questions

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