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."

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

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.

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.

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Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, C-Wire Required, Not Compatible with Line Volt Heating

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, C-Wire Required, Not Compatible with Line Volt Heating

Product ID: 85539689

Details

Brand
Honeywell Home
Colour
Grey Or White
Connectivity technology
Wi-Fi
Controller type
touch app
Model name
RTH9585WF1004
Power source
AC Power

⚡Energy Star certified efficiency

🌈Customizable color touchscreen

📱Wi-Fi & app remote control

Description

🌟 Upgrade your comfort game with color, control, and savings—because your home deserves smart style!

VOICE ENABLED CONVENIENCE - Hands-free temperature control with Alexa compatibility keeps your home smart and your life effortless.
TAILOR YOUR COMFORT PALETTE - Personalize your thermostat’s display to match your home’s vibe with a vibrant, easy-to-read touchscreen.
SMART SAVINGS SMARTER LIVING - Energy Star certification plus ongoing rebates and incentives help you cut costs while reducing your carbon footprint.
CONTROL FROM ANYWHERE ANYTIME - Seamlessly manage your home’s temperature via smartphone or tablet app—perfect for the on-the-go professional.
ADAPTIVE SCHEDULING FOR PEAK EFFICIENCY - Flexible 7-day programming and utility peak rate integration optimize comfort and savings without lifting a finger.

The Honeywell Home Wi-Fi Smart Color Programmable Thermostat (RTH9585WF1004) offers a customizable touchscreen interface, Wi-Fi connectivity for remote control via app, and Energy Star certification for efficient energy use. Compatible with most forced air and heat pump systems, it supports flexible 7-day scheduling and voice commands through Alexa, making it a stylish, smart upgrade for modern homes seeking comfort and savings.

Specifications

ASIN	B075BF6V58
Backlight	No
Best Sellers Rank	732,219 in DIY & Tools ( See Top 100 in DIY & Tools ) 667 in Home Programmable Thermostats
Brand	Honeywell Home
Brand Name	Honeywell Home
Colour	Grey Or White
Connectivity Protocol	Wi-Fi
Connectivity Technology	Wi-Fi
Control Method	Touch
Control Type	Temperature Control
Controller Type	touch, app, voice
Customer Reviews	4.4 out of 5 stars 17,510 Reviews
Display Type	touchscreen
Finish Type	Matte
Global Trade Identification Number	00085267911313
Included Components	Thermostat, Wall Plate, Screws, Anchors, Quick Start Guide, Thermostat ID Card, Wire Labels, User Guide
Item Shape	Rectangular
Item Type Name	Honeywell Home Wi-Fi Smart Color Programmable Thermostat, Alexa Enabled, (RTH9585WF1004)
Item Weight	0.45 Pounds
Manufacturer	Honeywell Home
Manufacturer Part Number	RTH9585WF1004
Material Type	Plastic
Model Name	RTH9585WF1004
Model Number	RTH9585WF1004/W
Model name	RTH9585WF1004
Mounting Type	Wall Mount
Number of Batteries	1 AAA batteries required.
Power Source	AC Power Supply
Product Style	B. Grey - WiFi Thermostat
Special Features	Customizable color touchscreen, Energy Star certified, Smart Response Technology
Special feature	Customizable color touchscreen, Energy Star certified, Smart Response Technology
Specific Uses For Product	Furnace
Specific uses for product	Furnace
Specification Met	Energy Star
Temperature Control Type	Digital, programmable
UPC	085267911313
Unit Count	1.0 count
Voltage	120 Volts

Reviews

M**I

Problema prodotto non utilizzabile per l’Italia

Parlato con assistenza honeywell in quanto il termostato in questione è stato ideato per il mercato americano e quindi non rispecchia gli standard per la connessione da remoto cellulare per gateway non compatibili

17.03.2022

F**A

EL TERMOSTATO FUNCIONA BIEN EN MEXICO.

EL TERMOSTATO FUNCIONA BIEN Y SI SE PUEDE PRENDER Y APAGAR VIA CELULAR DONDE ESTE EN MEXICO LA APLICACION. EL DE AMAZON NO SE PUEDE PARA MEXICO. LO UNICO QUE NO PUEDO PROGRAMAR TODAVIA ES COMO ACTIVARLO PARA QUE PRENDA Y APAGUE SOLO.

16.12.2022

R**S

Excellent so far! 4 1/2 stars!

12.12.2023

F**D

لا يمكن التحكم به من التطبيق

المنتج متوافق مع خوادم الانترنت في الولايات المتحدة الأمريكية فقط ، و لا يعمل التطبيق و لا يمكن تسجيلة في المملكة العربية السعودية ، بامكانك التحكم به من خلال المتصفح بعد تسجيل المنتج و كأنك تقيم في إحدى الولايات الأمريكية ، و ستحصل في المقابل على توقعات الطقس و اليوم و التاريخ و الساعة و كأن في إحدى المدن الأمريكية !! تواصلت مع الدعم الفني و كان ما سبق هم الملخص

6.12.2022

J**3

Great Smart Thermostat

4.01.2024

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