Can this thermostat be remotely controlled from an iPhone?

Yes. I am using an iPhone 4S and 5s and iPad to control the thermostat.

what is the battery type?

You need a C wire. There is a small backup battery used for the clock, but this will not power the thermostat. In the event of a power outage, the thermostat will turn off.

Clock is an hour and a half fast, but update thru internet time. Any ideas?

I'm having the same issue. Indiana a few years ago finally joined daylight saving time, and if you're in Arizona which does not observe DST, I wonder if Honeywell does not have the time zones correct (but hard to explain the extra half hour issue you have). I haven't been able to change the clock, and having the clock 1 hour wrong causes all my cycle times to happen at the wrong time until DST ends.

Does this unit have a change filter alarm?

It has a Filter count-down, but the unit doesn't do anything special when the counter reaches '0'. I have to check the Filter status (from the screen on the unit) to see how many days are left in the countdown. I can set the number of days the filter counter resets to, 60, 90, etc.

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Wi-Fi 7-Day Programmable Touchscreen Thermostat - RTH8580WF, "Requires C Wire"

Wi-Fi 7-Day Programmable Touchscreen Thermostat - RTH8580WF, "Requires C Wire"

Product ID: 3424314

Details

Brand
Honeywell
Model Name
Honeywell 9000
Controller Type
Android Vera
Special Feature
Programmable
Color
White

⏰7-day programmable schedule

⚡Requires C-wire power

📶Wi-Fi remote control

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌡️ Stay ahead of the curve—comfort and control in the palm of your hand!

SMART RESPONSE TECHNOLOGY - Learns your habits to pre-heat or cool your home just in time, ensuring comfort without wasting energy.
STAY ALERT STAY EFFICIENT - Receive instant high/low temperature and filter change alerts to keep your system running smoothly and your home comfortable.
TAILORED WEEKLY SCHEDULING - Customize up to 4 daily periods across 7 days to perfectly match your unique lifestyle and maximize energy savings.
CONTROL YOUR COMFORT ANYWHERE - Seamlessly adjust your home's temperature from your smartphone or computer with Honeywell’s reliable Wi-Fi connectivity.
UNIVERSAL COMPATIBILITY WITH POWER - Works with most heating and cooling systems requiring a C-wire, delivering consistent power and performance.

The Honeywell Wi-Fi 7-Day Programmable Touchscreen Thermostat (RTH8580WF) offers precise temperature control with ±1°F accuracy, remote access via iOS and Android apps, and customizable 7-day scheduling. It requires a C-wire for power and supports multiple HVAC systems, featuring smart learning technology, real-time alerts, and automatic software updates to optimize home comfort and energy efficiency.

Specifications

Brand	Honeywell
Model Name	Honeywell Wi-Fi 7-Day Programmable Touch Screen Smart Thermostat 9000 Series
Controller Type	Android, Vera
Special Feature	Programmable
Color	White
Specific Uses For Product	Furnace
Temperature Control Type	Heating
Connectivity Technology	Wi-Fi
Included Components	Thermostat
Power Source	Battery Powered
Item Weight	1.5 Pounds
Voltage	240 Volts
Material	RTH8580WF
Shape	RTH8580WF
Display Type	Digital
Control Type	Touch
Control Method	App
Connectivity Protocol	Wi-Fi
Mounting Type	Wall Mount
Style	RTH8580WF
Backlight	Yes
Specification Met	Energy Saving Thermostat
Number of Batteries	1 Lithium Metal batteries required. (included)
UPC	085267994002 085267556750
Global Trade Identification Number	00085267556750
Manufacturer	Honeywell
Part Number	RTH8580WF1007/W
Item Weight	1.5 pounds
Product Dimensions	6.5 x 5 x 2 inches
Item model number	RTH8580WF1007/W1
Batteries	1 Lithium Metal batteries required. (included)
Is Discontinued By Manufacturer	No
Size	RTH8580WF
Item Package Quantity	1
Number of Handles	1
Special Features	Programmable
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Silver Oxide
Average Battery Life	87600 Hours

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