Insteon Thermostat
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INSTEON 2441TH Thermostat

Control Your Thermostat From Any Insteon-Compatible Controller
  • Save money on energy bills by remotely controlling and programming your thermostat
  • Program settings for 7 days, including daily, weekdays, weekends and individual days
  • Works with heat/cool systems, including advanced 2-stage systems
  • All settings preserved through power failures in non-volatile memory
  • Perfect for anyone whose schedule varies throughout the week
  • Award-winning Insteon technology: the ultimate in simplicity and reliability
  • Use as an Insteon controller: thermostat can activate other Insteon devices when the temperature changes

Item #: 2441TH

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Frequently Bought Together:
  • Details
  • Specs
  • Reviews
  • Manuals
  • What's Included
  • Remote Control

    Control your thermostat from anywhere - in your home from an Insteon Keypad or on the road from your Smartphone with the Insteon Hub.

    System Support

    Our range of thermostat offerings ensures that even the most custom HVAC installation can be controlled.


    Insteon Thermostats fully integrate with your Insteon automation system. Automatically control duct dampers, ceiling fans and more.


    When one thermostat isn't enough, add Insteon Wireless Thermostats for additional temperature monitoring and throughout-the-home control.

    Smartphone Remote.

    Because carrying the thermostat around is just silly.

    When you install an Insteon Thermostat in your home and link it to the Insteon Hub, every smartphone and tablet you own becomes a remote control. It doesn't matter if you're hiding under the covers on a cold winter morning or running late out of the office on a sweltering summer evening, you can adjust the temperature from anywhere and ensure that your home is comfortable all the time.

    Winter Weather Watch

    Keep the blizzard outside and ensure your home is toasty warm by turning up the heat remotely.

    Summer Sun

    Cool down the house when you're on your way home on a blistering summer afternoon.

    Bon Voyage

    Turn off the AC even after you've left. Especially helpful for impromptu expeditions.

    Supported Systems

    A wide range of heating and cooling devices.

    Insteon Thermostat works with most heating and cooling systems found in homes and many businesses. With the exception of heat pumps and sophisticated triple-stage systems, you home's heating and cooling system is most likely compatible with Insteon Thermostat. In addition, Insteon Wireless Thermostat gives you control over line-voltage and millivolt heaters.

    Insteon Features

    When is a thermostat more than just a thermostat? When it's an Insteon Thermostat.

    Duct Dampers

    Add duct dampers to control the flow of conditioned air on a room-by-room basis with IO Module

    Learn More


    Use sensors on doors and windows to prevent the AC from cooling the entire neighborhood when a door or window is left open

    Learn More

    Line Voltage & Millivolt

    Integrated with line voltage systems using Micro Modules and vintage millivolt heaters with IO Module

    Learn More

    Ceiling Fans

    Automatically circulate conditioned air when you run the AC or heater by spinning up ceiling fans

    Learn More


    Multi-zone ready.

    You don't need to have a mansion to benefit from a multi-zone thermostat system. With the Insteon Thermostat, you can connected up to two additional Insteon Wireless Thermostats for remote temperature monitoring in your home. Place one in the hottest room in the house and use it as a basis for cooling your home. Add one to your guest bedroom and let the in-laws have a say in household temperature. Or simply move the temperature sensing from a dark and deserted hallway to the center of your home.

    Venstar Adapter

    Extend the functionality of your existing thermostat.

    The Venstar Thermostat Adapter connects to the accessory port on the bottom of select Venstar and Totaline thermostats³. With the Vesntar Adapter installed, your Insteon home can read the temperature, change modes and adjust the heat and cool set points. And if you have a heat pump or advanced dual-fuel system, the Insteon Venstar Adapter inherits the capabilites of your thermostat, give you Insteon control over sophisticated HVAC systems.

    Wired Thermostat

    Control and automate your 24V-based heating and cooling system

    24V AC
    1 and 2 Stage Heat
    1 and 2 Stage Cooling
    Forced Air Fan

    Wireless Thermostat

    Anywhere-in-the-home temperature monitoring and line voltage system support

    Dimmable Lights Only
    Up to 1000W
    100-277VAC, 50/60Hz
    Neutral Wire Required

    Venstar Thermostat Adapter

    For Systems with existing Venstar Thermostats including those with heat pumps

    24V AC
    1 and 2 Stage Heat
    1 and 2 Stage Cooling
    Forced Air Fan
    Heat Pumps

    1. Control of millivolt heaters requires an Insteon IO Module and at least one dual-band Insteon device.
    2. Control of line voltage heaters requires an Insteon Micro Module.
    3. Venstar Thermostat Adapter is compatible with Venstar T1700, T1800, T1900 and Totaline P374-1700, P374-1800, P374-1900, T2700, T2800 and T2900 thermostats.

  • General
    Product Name: Insteon Thermostat
    Brand / Manufacturer: Insteon
    Manufacturer Product No.: 2441TH
    UPC: 813922010824
    Insteon Powerline Mesh Repeater: No
    Insteon RF mesh repeater: Yes
    Insteon controller: Yes
    Insteon responder: Yes
    Maximum links/scenes: 400
    LED: Red when Heating is active, green when Cooling is active, Off when when neither mode is active, blinks red or green during setup
    LED Brightness: LED can be enabled or disabled locally or via software
    Local Control: Yes
    Commands Supported as Controller: On Off
    Commands Supported as Responder: On Off
    Software configurable: Yes
    RF Range: Up to 50 meters open air
    Phase Bridge Detect Beacon: No, RF only device
    Mounting: Wall mount
    Wire Connections: Common 24V
    Power 24V
    Heat 1
    Heat 2
    Cooling 1
    Cooling 2
    Screw Clamp Connections: Yes, 10 position
    Case Color: White
    Set Button: 1
    Plastic: UV stabilized ABS
    Beeper: Yes
    Beep on Button Press: Optional (off by default)
    LED: 1 dual-color red/green
    Dimensions: 5.7"x 3.6"x 1.1"(14.5cm x 9.1 cm x 2.8cm)
    Operating Environment: Indoors
    Operating Temperature Range: 39° to 104°F (4°to 40°C)
    Operating Humidity Range: 0-90% relative humidity
    Storage Temperature Range: -4° to 158°F (-20°to 70°C)
    Voltage: 24VAC (supplied by furnace or air handler)
    Frequency: 50/60Hz
    Retains All Settings Without Power: Yes, saved in non-volatile EEPROM
    Certifications: FCC, IC Canada, EN International
    Standby power consumption: < 1 watt
    FCC ID: SBP2441T

  • Reviews 1 - 10 of 102

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    7. 11
    Wonderful device Review by George the architect
    Wonderful device

    I have installed these thermostats in two of my homes and I can monitor and adjust the temperature and monitor the humidity from my I phone anywhere in the world. If you gave a five wire system great. If not use the add a wire adapter to make a four wire system compatible. Also works great as a programmable thermostat for two day plus five day or seven day programmable options.

    Posted on 3/28/2015

    Review 24441Th Review by Mark
    Review 24441Th

    Have installed a number of these units both using 5 wire and 4 wire (using add a wire) and all have worked as advertised. Some units need to be calibrated but most are very close. I use universal devices to control and really appreciate the humidity readout here in Michigan.

    Posted on 3/8/2015

    Works well; but make sure you have 5+ wires to your thermostat Review by Luke
    Works well; but make sure you have 5+ wires to your thermostat

    - Looks nice
    - Temperature and humidity readings are accurate (I cross-checked it with some other sensors)
    - Clear labeling to make install easy

    - Requires 5 wires to your HVAC system (need to run new wire or get an adapter to make it work)
    - Doesn't have a good way to turn on the backlight. It comes on when you press a button on the thermostat (such as the temperature up button) but that means you have to increase the temperature to get the backlight on. I believe newer ones have fixed this by making the set button accessible without opening the cover.

    Posted on 2/25/2015

    Not for two wire heating only systems Review by Frank
    Not for two wire heating only systems

    You have to buy an adapter for use with two wure systems.

    Posted on 2/24/2015

    Excellent unit Review by Health Highway
    Excellent unit

    I installed this unit a year ago. This needs a common wire and fortunately I used a spare wire coming to thermostst and connected to common on the furnace. It has been working great bi an access and control temp from my iPhone from anywhere.

    Posted on 2/24/2015

    Works for me Review by Timmcd1
    Works for me

    I've had this thermostat installed for well over a year now, with no real problems. It's been under ISY control the last six months. My only complaint is that in order to get the display backlight to turn on,one must press a button, changing a setting. The firmware should be updated so that the first button press only turns on the backlight.

    Posted on 12/17/2014

    Energy mode issue not resolved Review by Perry
    Energy mode issue not resolved

    This is a great thermostat, except for one bug that Smarthome refuses to acknowledge. The unit goes in and out of "energy mode" on its own when called to heat the furnace. From reading the comments here and other places, I believe the problem comes from signal interference generated by furnace igniter and conducted to thermostat. It is odd that thermostat can behave the way it does without a formal command to put energy mode on or off. But the problem has gone on for 2 years and Smarthome does not acknowledge. I have now read 12 or more different people's account of same issue.

    Posted on 12/2/2014

    Disappointed Review by Frank

    This device stopped work after 3 days. During the 3 days it kept rebooting and displaying a two digit number and beep into the morning. Very disappointed in this product.

    Posted on 10/10/2014

    only works with some wiring Review by cstork
    only works with some wiring

    You need to have 5 live wires for this thermostat to work. Doesn't work with older furnaces. Check your thermostat before buying.

    Posted on 10/6/2014

    Works GREAT Review by Sully
    Works GREAT

    Thermostat itself, great, 5 star. Integration with Hub, eh, seems to only change temp and let you connect to scenes. All other settings only accessible on the stat itself, -1 star.

    My install, terrible. 40 year old HVAC system, no Common wire. Fortunately, the existing thermostat wiring had a spare wire in it. Had to tear into Air Handler to find the Transformer and connect the spare wire to it's Common. Installing on my ancient system was a pain, but now its working, it rocks, and already using it to adjust temps when away.

    Posted on 10/2/2014

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    • Two mounting screws
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