Insteon Remote Control Totaline/Venstar Compatible Thermostat Adapter

Control Your Thermostat From Any Insteon-Compatible Controller
  • Save energy and money on bills by remotely controlling your thermostat
  • Compatible with Totaline/Venstar T1700, T1800, and T1900 thermostats
  • No batteries! Insteon Adapter is powered by thermostat
  • Now available as an all-in-one solution: Insteon Thermostat
  • Insteon Hub Pro enables this device to work with HomeKit techonolgy


  • 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.

    Control on Apple Watch

    With the Insteon App on Apple Watch, you don't even need to reach for your iPhone to adjust the Thermostat. Change your Thermostat mode right on your wrist. (Disclaimer "Mode control only. Set point and fan currently unavailable from Apple Watch. Feature will be added in a future software update.”)

    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, your 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

    Wired Thermostat for Heat Pumps

    Wireless Thermostat

    Venstar Thermostat Adapter3

    Control and automate your 24V-based heating and cooling

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

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

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

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

    2 AA Batteries
    Optional 5V Power Supply
    Millivolt Heaters1
    Line-Voltage Heaters2

    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.

  • Specifications

    Brand: Insteon
    Manufacturer Product No.: 2441V Insteon Thermostat Adapter for Venstar/ Totaline
    UPC: 718122387212
    Patent No.: U.S. Patent No. 7,345,998, International patents pending
    Color: White
    Range: 150' (line of sight)
    Frequency: 915 MHz
    Warranty: 2 years, limited
    Compatible Thermostats
    Carrier/Totaline Residential: P374-1700, P374-1800, P374-1900
    Venstar Residential: T1700, T1800, T1900
    Carrier/Totaline Commercial: P374-2700, P374-2800, P374-2900
    Venstar Commercial: T2700, T2800, T2900
    Status LED: 1 Green LED (normally on)
    Setup Memory: Non-volatile EEPROM
    Software Supported features (as avail via software such as HouseLinc)
    Heat set point: Supports all set points of Thermostat
    Cool set point: Supports all set points of Thermostat
    Temperature Status Request: Supported
    Humidity Status Request: Supported
    Mode Status Request: Supported
    Fan Status Request: Supported when in "Auto" mode
    Mode Control: Heat, Cool, Auto, OFF
    Fan Control: On, Auto
    Degree Format (F/C): As Supported by Thermostat
    Insteon Features
    Insteon Addresses: 1 hard-coded out of 16,777,216 possible
    Insteon Links: 417
    Insteon Messages Repeated: Yes
    Operating Temperature Range: Indoors, 32 to 104°F
    Operating Humidity Range: 0% - 85% relative humidity
    Dimensions: 1.75" H x 2.89" W x .58" D
    Weight: .80 oz
    Connector: RJ11 4 wire (top of unit)
    Input Power: 5VDC 30mA Standby (Powered from Thermostat)
    FCC Certification: ID SBP2441
    Industry Canada Certification: IC :5202A-2441V

  • Reviews 1 - 10 of 54

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    Almost excited Review by William
    Almost excited

    I was very interested when i saw that this Insteon adapter supports Ventstar thermostats. But alas it does not support the T5800 Venstar model of which I have 2 that I like very much. Venstar offers a Skyport WiFi Key that fits in it's SD card slot, but that's not Insteon compatible. Still hope hopeful.

    Posted on 10/30/2015

    Dead end product Review by Orange93
    Dead end product

    I am a very longtime Insteon user and have many devices in my house. They work well ... except the thermostat adapters. There is no other way to say it other than they do not work well at all. Even with an access point located right under it requires many, many tries to change a setting from the Insteon mobile app. Current settings and temperature on the thermostat are reported just fine but sending commands does not work reliably, very frustrating. It is a best a partial design that was clearly never fully tested and tech support is of no help at all on this product. Do not buy it!

    Posted on 6/28/2015

    Works Review by Donald

    Recently purchased 5 of these devices. All worked as expected and were easy to setup. Works like a charm with the ISY.

    Posted on 2/24/2015

    Review of 2441V Review by ERIC
    Review of 2441V

    This unit was a replacement for a venstar with built in insteon card that occasionally stopped communicating. One month no issues.

    Posted on 12/11/2013

    Review of 2441V Review by Paul
    Review of 2441V

    This one is a fail, have bought 2 in four years, both of them stopped working correctly within a year

    Posted on 11/26/2013

    Review of 2441V Review by Paul Warnk
    Review of 2441V

    This one is a fail, have bought 2 in four years, both of them stopped working correctly within a year

    Posted on 11/26/2013

    Review of 2441V Review by D.
    Review of 2441V

    The Adapter works fine, but the setup was not easy.
    Called several times for tech support and each time took over 20 minutes to connect to a tech. Once connected to a tech the support was great.

    Posted on 8/25/2013

    Review of 2441V Review by D. DALE
    Review of 2441V

    The Adapter works fine, but the setup was not easy.
    Called several times for tech support and each time took over 20 minutes to connect to a tech. Once connected to a tech the support was great.

    Posted on 8/25/2013

    Review of 2441V Review by DWIGHT
    Review of 2441V

    I have had very poor service out of this product. Not reliable.

    Posted on 12/1/2012

    Review of 2441V Review by VICTOR
    Review of 2441V

    I love most of my Insteon products, but not this one. I am on my 4th thermostat adapter. 2 before the recall and 2 after and I almost just had a tech sending out my 5th but fortunately our call was disconnected and when I called back in I received a much more thorough tech who did research and found that the Insteon IPhone app is broken for everyone until ios6 came out (which incidentally didn't fix it either, but I'm able to use the web interface after a full reset of the adapter)

    I am convinced this adapter has been an an ill-conceived nightmare for Insteon since they've now come out with their own thermostat and wireless add-on sensor. But for customers like me who have already invested $350-$400 for the Venstar T1900, the Insteon adapter, the wiress temperature sensor, and the wireless receiver for the thermostat -we simply can't afford to buy these new pieces and scrap our investment.

    I really feel Insteon should offer the new items to people who have had as much trouble as I've had and been patient through 2 years of trials and tribulations.

    Posted on 9/26/2012

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