Accessibility Links

Skip to main contentAccessibility help
Accessibility feedback
St. Patrick's Day 2026
St. Patrick's Day 2026
Go to Google home
Press / to jump to the search box
Choose what you’re giving feedback on
  • Delete

  • See more
  • Delete

  • See more
  • Report inappropriate predictions
    Quick Settings
    Sign in

    Filters and Topics

    AI Mode
    All
    Shopping
    Images
    Videos
    Forums
    Short videos
    More
    News
    Web
    Books
    Maps
    Tools
    Any time
    Any time
    Past hour
    Past 24 hours
    Past week
    Past month
    Past year
    Custom range...
    Custom date range
    Go
    All results
    All results
    Verbatim
    Advanced Search
    About 203 results (0.31s) 
    Ctrl+Shift+X to select

    Refine results

    • Features
      • Digital
      • Programmable
      • For Single-stage Heating & ...
      • Remote Programming
      See more
    • System Compatibility
      • Heat Pump
      • Furnace
      • Universal
      • Baseboard Heater
    • Stores
      • Home Depot
      • eBay
      • Walmart
      • AliExpress
      See more
    • Compatibility
      • Line Voltage
      • Low Voltage
      • Millivolt
    • Color
      • Black
      • Gray
      • Green
      • Brown
      See more
    • Brand
      • Honeywell
      • Johnson Controls
      • White-Rodgers
      • Thermokon
      See more
    • Assistant Support
      • Amazon Alexa
      • Google Assistant
      • Siri
    • Shape
      • Round
      • Square
      • Rectangular
    • Price
      • Under $150
      • Over $150
      • $
        Please provide a valid price.
        $
        Please provide a valid price.
    • Sort by
      • Price: low to high
      • Price: high to low
    • Free shipping
      • Free shipping
    Failed to load more results. Please try again later.
    Sensor
    Nearby
    Smart Thermostats
    Digital
    Programmable
    On sale
    Get it by Thu
    Heat Pump
    Location
    For Single-stage Heating & ...
    Remote Programming
    Line Voltage
    Low Voltage
    Furnace
    Price
    Touchscreen
    Buy
    Size
    Reviews
    For Sale
    Black
    Universal
    Analog
    Honeywell
    Gray

    Search Results

    HVAC Thermostat With RS485 Modbus, Keycard, External ...


    etopcontrols.com
    https://www.etopcontrols.com › Others
    etopcontrols.com
    https://www.etopcontrols.com › Others
    This touch EC fan coil thermostat is designed to control the fans, valves, dampers or electric heater in fan coil units and heating applications in industrial, ...Read more
    hvac rs485 thermostat from www.etopcontrols.com

    RS485 Modbus Remote Control Digital Programmable ...


    Hotowell
    https://www.hotowell.com › product › rs485-modbus-ho...
    Hotowell
    https://www.hotowell.com › product › rs485-modbus-ho...
    RS485 Modbus Remote Control Digital Programmable HVAC Room Thermostat for Hotel ; * AC controlling solutions, * Configurable for 2 pipe / 4 pipe systems ; * Black ...Read more
    hvac rs485 thermostat from www.hotowell.com

    Verdant VX3 Wired EMS Thermostat Kit (RS485) with built- ...


    THE OLSEN GROUP LLC
    https://goolsengroup.com › product › verdant-vx3-wire...
    THE OLSEN GROUP LLC
    https://goolsengroup.com › product › verdant-vx3-wire...
    Featuring a large backlit screen and intuitive buttons, the VX thermostat makes it easy for guests to manage the temperature, promoting comfort and reducing ...Read more
    hvac rs485 thermostat from goolsengroup.com

    RS-485 communication? : r/DIYHeatPumps


    Reddit · r/DIYHeatPumps
    10+ comments · 1 year ago
    Reddit · r/DIYHeatPumps
    10+ comments · 1 year ago
    Has anyone here ever attempted to communicate with a heat pump via "BACNet" using a PC and USB RS-485 adapter?Read more
    16 answers  ·  Top answer: Hey just to close the loop for anyone that finds this, I figured it out - and it seems this ...
    24V vs RS485 for compressor / air handler communication
    Apr 20, 2025
    RS485 Thermostats? : r/homeassistant - Reddit
    Oct 11, 2016
    More results from www.reddit.com

    RS485 AC/EC 0-10V Thermostat adjusts Home air ...


    Amazon.com
    https://www.amazon.com › Thermostat-adjusts-Conditio...
    Amazon.com
    https://www.amazon.com › Thermostat-adjusts-Conditio...
    Amazon.com: RS485 AC/EC 0-10V Thermostat adjusts Home air Conditioner via 220VAC 24V(3 S AC 1V_24V RS485 Version) : Appliances.
    Missing: hvac ‎| Show results with: hvac

    RS485 Programmable Low-Voltage Thermostats


    Grainger
    https://www.grainger.com › category › room-thermostats
    Grainger
    https://www.grainger.com › category › room-thermostats
    They give users more control and offer more energy efficiency than nonprogrammable thermostats, as the temperature automatically adjusts at the scheduled time.Read more

    MRCOOL Versa Pro Wiring Guide: Power, RS485 Comms ...


    YouTube · Vincent Stevenson
    2.4K+ views · 3 months ago
    YouTube · Vincent Stevenson
    2.4K+ views · 3 months ago
    In this video, I walk through the complete wiring setup for a MRCOOL Versa Pro split heat pump system, including power wiring, ...
    4:53
    Vincent Stevenson
    YouTube·
    Dec 6, 2025

    MRCOOL Versa Pro Wiring Guide: Power, RS485 Comms ...

    YouTube·Vincent Stevenson·Dec 6, 2025
    YouTube
    Popular products
    • iStat6 Modbus programmable thermostat.
      iStat6 Modbus programmable thermostat
      $129.00
      isquared.ca
      iStat6 Modbus programmable thermostat
      $129.00
      isquared.ca
      Programmable · Digital · Remote Programming
    • 49% OFF
      TUYA WIFI/RS485 Modbus RTU Programmable Thermostat for Control 2/4-Way Valve Heat/Cool HAVC Air. 49% OFF.
      TUYA WIFI/RS485 Modbus RTU Programmable Thermostat for Control 2/4-Way Valve Heat/Cool HAVC Air
      $49.77$98
      AliExpress
      Free delivery
      49% OFF
      TUYA WIFI/RS485 Modbus RTU Programmable Thermostat for Control 2/4-Way Valve Heat/Cool HAVC Air
      $49.77$98
      AliExpress
      Free delivery
      Low Voltage · Programmable · Amazon Alexa
    • Rs485 Modbus Smart Ac Programmable Thermostat, 3-speed Fan Control, Oem.
      Rs485 Modbus Smart Ac Programmable Thermostat, 3-speed Fan Control, Oem
      $21.60$43
      Alibaba.com
      Rs485 Modbus Smart Ac Programmable Thermostat, 3-speed Fan Control, Oem
      $21.60$43
      Alibaba.com
      Programmable · Digital
    • 32% OFF
      24VAC Modbus & RS485 thermostat 0-10V Fan output 2P-4P fan coil thermostat for cooling heating |. 32% OFF.
      24VAC Modbus & RS485 thermostat 0-10V Fan output 2P-4P fan coil thermostat for cooling heating |
      $37.30$56
      AliExpress
      Free delivery
      32% OFF
      24VAC Modbus & RS485 thermostat 0-10V Fan output 2P-4P fan coil thermostat for cooling heating |
      $37.30$56
      AliExpress
      Free delivery
      Line Voltage, Low Voltage
    • Aprilaire S86WMUPR Programmable Wi-Fi Thermostat.
      Nearby, 4 mi
      Aprilaire S86WMUPR Programmable Wi-Fi Thermostat
      $141.99
      Ferguson
       & more
      3.8(9)
      Nearby, 4 mi
      Aprilaire S86WMUPR Programmable Wi-Fi Thermostat
      $141.99
      Ferguson
       & more
      3.8(9)
    • 47% OFF
      Zigbee/Wifi/RS485 Air Conditioning Thermostat Fan Coil Unit Home Cooling/Heating 2/4 Pipe. 47% OFF.
      Zigbee/Wifi/RS485 Air Conditioning Thermostat Fan Coil Unit Home Cooling/Heating 2/4 Pipe
      $40.13$77
      AliExpress
      47% OFF
      Zigbee/Wifi/RS485 Air Conditioning Thermostat Fan Coil Unit Home Cooling/Heating 2/4 Pipe
      $40.13$77
      AliExpress
      Low Voltage · Amazon Alexa · Digital
    • 20% OFF
      Carel Thermostat Cold Cooling Heating Network Rs485 Temperature. 20% OFF.
      Carel Thermostat Cold Cooling Heating Network Rs485 Temperature
      $37.60Pre-owned
      eBay - bitsho_datk5o
      20% OFF
      Carel Thermostat Cold Cooling Heating Network Rs485 Temperature
      $37.60Pre-owned
      eBay - bitsho_datk5o
    • 36% OFF
      RS485 Programmable Central Air Conditioner Thermostat Fan Coil Units With Remote Control Temperature. 36% OFF.
      RS485 Programmable Central Air Conditioner Thermostat Fan Coil Units With Remote Control Temperature
      $33.45$53
      AliExpress
      Free delivery
      36% OFF
      RS485 Programmable Central Air Conditioner Thermostat Fan Coil Units With Remote Control Temperature
      $33.45$53
      AliExpress
      Free delivery
      Programmable · Digital · Remote Programming
    • Tuya Hvac Rs485 Modbus 24v 220v Digital Fcu Smart Thermostat.
      Tuya Hvac Rs485 Modbus 24v 220v Digital Fcu Smart Thermostat
      $47.96
      Alibaba.com
      Tuya Hvac Rs485 Modbus 24v 220v Digital Fcu Smart Thermostat
      $47.96
      Alibaba.com
      Programmable · Digital · Remote Programming
    • Emerson Sensi Touch Smart Thermostat.
      Nearby, 10 mi
      Emerson Sensi Touch Smart Thermostat
      $169.99
      Home Depot
       & more
      4.5(1.7K)
      Nearby, 10 mi
      Emerson Sensi Touch Smart Thermostat
      $169.99
      Home Depot
       & more
      4.5(1.7K)
      Plays nice with Alexa and Google Assistant · Touchscreen is sleek enough
      Reddit

    NT-485


    Network Thermostat
    https://networkthermostat.com › accessories
    Network Thermostat
    https://networkthermostat.com › accessories
    The Network Thermostat NT-485 is a simple to install Modbus RTU translator for connecting X-Series thermostats to any Modbus system, regardless of the ...
    hvac rs485 thermostat from networkthermostat.com

    What is RS-485 Communication?


    HVAC School
    http://www.hvacrschool.com › what-is-rs-485-communic...
    HVAC School
    http://www.hvacrschool.com › what-is-rs-485-communic...
    Aug 16, 2025 — While RS-485 is robust, it does have a few fundamental rules and limitations to keep in mind. First, RS-485 only carries the message itself.Read more
    More products
    • 39% OFF
      Dual sensor air conditioner thermostat MODBUS RS485 remote control, 2pipe fan coil temperature. 39% OFF.
      Dual sensor air conditioner thermostat MODBUS RS485 remote control, 2pipe fan coil temperature
      $32.99$54
      AliExpress
      Free delivery
      39% OFF
      Dual sensor air conditioner thermostat MODBUS RS485 remote control, 2pipe fan coil temperature
      $32.99$54
      AliExpress
      Free delivery
      Line Voltage, Low Voltage · Remote Programming
    • N323R NTC Defrost RS485 Temperature Controller.
      N323R NTC Defrost RS485 Temperature Controller
      $79.00
      Advanced Automation Products
       & more
      N323R NTC Defrost RS485 Temperature Controller
      $79.00
      Advanced Automation Products
       & more
    • 39% OFF
      Wifi/RS485/Zigbee Thermostat Air Conditioning 3 Fan Coil Unit Home Cooling/Heating 2/4 Pipe. 39% OFF.
      Wifi/RS485/Zigbee Thermostat Air Conditioning 3 Fan Coil Unit Home Cooling/Heating 2/4 Pipe
      $52.95$87
      AliExpress
      39% OFF
      Wifi/RS485/Zigbee Thermostat Air Conditioning 3 Fan Coil Unit Home Cooling/Heating 2/4 Pipe
      $52.95$87
      AliExpress
      Low Voltage · Amazon Alexa · Digital
    • Wholesale RS485 Thermostat thermostat fan coil thermostat,1 Piece.
      Wholesale RS485 Thermostat thermostat fan coil thermostat,1 Piece
      $25.00
      Alibaba.com
      Wholesale RS485 Thermostat thermostat fan coil thermostat,1 Piece
      $25.00
      Alibaba.com
    • LOW PRICE
      Honeywell TC500A-N Smart Thermostat. Low price.
      Honeywell TC500A-N Smart Thermostat
      $399.97Usually $460
      Memphis Control Center
       & more
      3.4(5)
      LOW PRICE
      Honeywell TC500A-N Smart Thermostat
      $399.97Usually $460
      Memphis Control Center
       & more
      3.4(5)
    • 54% OFF
      TUYA WiFi Air Conditioner Thermostat with RS485& Modbus RTU Communication Interface,Temperature. 54% OFF.
      TUYA WiFi Air Conditioner Thermostat with RS485& Modbus RTU Communication Interface,Temperature
      $39.18$87
      AliExpress
      Free delivery
      54% OFF
      TUYA WiFi Air Conditioner Thermostat with RS485& Modbus RTU Communication Interface,Temperature
      $39.18$87
      AliExpress
      Free delivery
      Low Voltage · Amazon Alexa · Digital
    • 1pcs Automatic Thermostat Nt-48-r-rs485.
      1pcs Automatic Thermostat Nt-48-r-rs485
      $67.94
      eBay - caiyungun-888
      Free delivery
      1pcs Automatic Thermostat Nt-48-r-rs485
      $67.94
      eBay - caiyungun-888
      Free delivery
    • 1pc Nt-48-r-rs485 Automatic Thermostat.
      1pc Nt-48-r-rs485 Automatic Thermostat
      $87.51
      eBay - mod_shop2023
      1pc Nt-48-r-rs485 Automatic Thermostat
      $87.51
      eBay - mod_shop2023
    • 30% OFF
      Tcs Ubiquistat Us4020 Programmable Thermostat Rs-485. 30% OFF.
      Tcs Ubiquistat Us4020 Programmable Thermostat Rs-485
      $177.79$254
      eBay
      30% OFF
      Tcs Ubiquistat Us4020 Programmable Thermostat Rs-485
      $177.79$254
      eBay
      Furnace · Low Voltage · Programmable
    • Zl-630a-r Rs485 Digital Cold Storage Temperature Controller Thermostat.
      Zl-630a-r Rs485 Digital Cold Storage Temperature Controller Thermostat
      $32.76
      eBay - alice1101983
      Zl-630a-r Rs485 Digital Cold Storage Temperature Controller Thermostat
      $32.76
      eBay - alice1101983
      Digital
    More products
    • 52% OFF
      RS485/WIFI/ZIGBEE AC/EC 0-10V Thermostat for 3-Speed Fan Coil Regulates Home Air Conditioning System. 52% OFF.
      RS485/WIFI/ZIGBEE AC/EC 0-10V Thermostat for 3-Speed Fan Coil Regulates Home Air Conditioning System
      $25.92$54
      AliExpress
      52% OFF
      RS485/WIFI/ZIGBEE AC/EC 0-10V Thermostat for 3-Speed Fan Coil Regulates Home Air Conditioning System
      $25.92$54
      AliExpress
      Line Voltage · Remote Programming
    • 39% OFF
      RS485 Modbus heat regulator warm floor 16A Electric Heating thermostat. 39% OFF.
      RS485 Modbus heat regulator warm floor 16A Electric Heating thermostat
      $25.60$43
      AliExpress
      Free delivery
      39% OFF
      RS485 Modbus heat regulator warm floor 16A Electric Heating thermostat
      $25.60$43
      AliExpress
      Free delivery
      Line Voltage, Low Voltage
    • 37% OFF
      RS485 temperature controller for heating and cooling, 2p-4p fan coil thermostat control 3 speed fans. 37% OFF.
      RS485 temperature controller for heating and cooling, 2p-4p fan coil thermostat control 3 speed fans
      $25.30$41
      AliExpress
      Free delivery
      37% OFF
      RS485 temperature controller for heating and cooling, 2p-4p fan coil thermostat control 3 speed fans
      $25.30$41
      AliExpress
      Free delivery
    • 9% OFF
      Digital Temperature Controller Lcd Screen Thermostat Rs485 4-20ma. 9% OFF.
      Digital Temperature Controller Lcd Screen Thermostat Rs485 4-20ma
      $83.78$92
      eBay - businessleader-0
      Free delivery
      9% OFF
      Digital Temperature Controller Lcd Screen Thermostat Rs485 4-20ma
      $83.78$92
      eBay - businessleader-0
      Free delivery
      Digital
    • Honeywell Vision Pro 8000 Thermostat.
      Also nearby
      Honeywell Vision Pro 8000 Thermostat
      $255.00
      HVACDirect.com
       & more
      3.3(154)
      Also nearby
      Honeywell Vision Pro 8000 Thermostat
      $255.00
      HVACDirect.com
       & more
      3.3(154)
    • 43% OFF
      WIFI/ZIGBEE/RS485 Fan Coil Thermostat For Cool Heat ON/OFF,EC 0-10V Proportional Valve Work 3-Speed. 43% OFF.
      WIFI/ZIGBEE/RS485 Fan Coil Thermostat For Cool Heat ON/OFF,EC 0-10V Proportional Valve Work 3-Speed
      $25.48$45
      AliExpress
      Free delivery
      43% OFF
      WIFI/ZIGBEE/RS485 Fan Coil Thermostat For Cool Heat ON/OFF,EC 0-10V Proportional Valve Work 3-Speed
      $25.48$45
      AliExpress
      Free delivery
      Line Voltage · Remote Programming
    • Bwdk3208e-n Electronic Thermostat With Rs485 Communication Accessories.
      Bwdk3208e-n Electronic Thermostat With Rs485 Communication Accessories
      $409.00
      eBay - lix-computer-mall*
      Bwdk3208e-n Electronic Thermostat With Rs485 Communication Accessories
      $409.00
      eBay - lix-computer-mall*
    • 36% OFF
      WIFI/RS485 Fan Coil Thermostat for EC 0-10V Proportional Cool&Heat Valve/Fan 1-Speed/3-Speed Work. 36% OFF.
      WIFI/RS485 Fan Coil Thermostat for EC 0-10V Proportional Cool&Heat Valve/Fan 1-Speed/3-Speed Work
      $33.41$53
      AliExpress
      36% OFF
      WIFI/RS485 Fan Coil Thermostat for EC 0-10V Proportional Cool&Heat Valve/Fan 1-Speed/3-Speed Work
      $33.41$53
      AliExpress
      Low Voltage · Remote Programming
    • 1PCS FOTEK NT-48-R-RS485 Automatic thermostat NT48RRS485.
      1PCS FOTEK NT-48-R-RS485 Automatic thermostat NT48RRS485
      $72.85
      eBay - liuyfretailer
      1PCS FOTEK NT-48-R-RS485 Automatic thermostat NT48RRS485
      $72.85
      eBay - liuyfretailer
    • Novus J/K/T RS485 Temperature Controller.
      Novus J/K/T RS485 Temperature Controller
      $95.00
      MegaDepot
      Novus J/K/T RS485 Temperature Controller
      $95.00
      MegaDepot

    Thermostat Rs485


    eBay
    https://www.ebay.com › shop › thermostat-rs485
    eBay
    https://www.ebay.com › shop › thermostat-rs485
    TCS UbiquiSTAT US4020 Programmable Thermostat RS-485 · $253.99 ; TCS UbiquiSTAT US4021 Programmable Thermostat RS-485 · $150.00.Read more
    hvac rs485 thermostat from www.ebay.com
    4.6 store rating (2.6K) · $9 to $254 · $7.95 delivery
    People also ask
    Do thermostats use RS485?
    Only a single RS485 port is required (and an RS232 port can be used with an appropriate powered RS232-RS485 adapter) to control up to 32 thermostats.

    Heatmiser Thermostat Module (RS485 Version) - Shop


    Shop - Ultamation
    https://shop.ultamation.com › index.php › product › 10-...
    Shop - Ultamation
    https://shop.ultamation.com › index.php › product › 10-...
    What is the 20 degree rule for HVAC?
    Simply put, it means you should never set your thermostat for a temperature more than 20 degrees cooler than the outside air. Why not? Most air conditioning systems can only handle a 20-degree difference between the outside and inside air temperatures.

    What Is The 20 Degree Rule? - Huntsville Utilities


    Huntsville Utilities
    https://www.hsvutil.org › news_detail_T15_R85
    Huntsville Utilities
    https://www.hsvutil.org › news_detail_T15_R85
    What is RS485 used for?
    An error has occurred. Please try again later.

    Ask anything in AI Mode

    Explain its advantages in detail
    Give me common RS485 protocols
    Compare RS485 to RS232
    What is temperature and humidity sensor with RS485 communication?
    The RS485 temperature and humidity sensor is an industrial-grade device that delivers high-precision readings. It utilizes a high-quality digital integrated transducer and a dependable digital processing circuit to convert environmental temperature and humidity values into corresponding RS485 signals.

    RS485 Temperature & Humidity Sensor Probe MODBUS RTU - Evelta


    Evelta
    https://evelta.com › rs485-temperature-humidity-sensor-...
    Evelta
    https://evelta.com › rs485-temperature-humidity-sensor-...
    Feedback
    People also ask
    Feedback
    People also search for
    Hvac rs485 thermostat manual
    Hvac rs485 thermostat replacement
    Hvac rs485 thermostat wiring

    Page Navigation

    12345678910Next

    Footer Links

    Bull Run, Virginia
     - Based on your past activity
     - 
    Update location
    Can't update your location
    Learn more
    Updating location...
    HelpSend feedbackPrivacyTerms
    Google apps