expert4house BHT-18 AI Knob Thermostat User Guide

June 1, 2024


expert4house BHT-18 AI Knob Thermostat



  • Product: AI Knob Thermostat
  • Model: BHT-18
  • Features: AI control, energy-saving, programmable/manual mode, temperature adjustment, energy efficiency reports
  • Power Supply: 95-240 VAC, 50-60Hz
  • Current Load: 16A 3000W (electric heating), 20A 4000W (electric heating)
  • Sensor: NTC3950, 10K
  • Ambient Humidity: 5-95% RH (Non-Condensing)

Product Usage Instructions


  • Follow the wiring diagram provided in the user manual to connect the thermostat correctly to the power supply and heating system.

Setting Up

  • Power on the thermostat and set the current time and date.
  • Configure the desired temperature settings for different periods of the day.

AI Control

  • Activate the AI control feature by interacting with the thermostat through voice commands. Adjust the temperature and receive energy efficiency reports using AI technology.

Energy Saving Mode

  • Utilize the energy-saving mode to optimize energy consumption based on your usage patterns and preferences.


  • Create a customized heating schedule by programming specific temperature settings for different periods throughout the week.

Frequently Asked Questions (FAQ)

Q: Can the thermostat be used with underfloor heating systems?

A: Yes, the thermostat is compatible with underfloor heating systems such as heating cables, heating film, and thermal mats.

Q: How do I adjust the temperature using the AI knob?

A: Simply rotate the AI knob to adjust the temperature setting on the thermostat display.


BHT-18 AI Thermostat Through ChatGPT, users can adjust the temperature and check energy efficiency reports by talking to AI, Designed to deliver unprecedented comfort and energy efficiency to your home or office environment .expert4house-BHT-18-AI-Knob-Thermostat-fig-3



On Appearance

  • LED display screen, simple Ul, protects your eyes.
  • The combination of knobs and touch buttons makes operation easy.
  • 12.5mm ultra-thin embedded panel perfectly adapts to various walls;
  • Rotating color-changing light ring;
  • Black/white or black+white multiple color matching styles, seamless integration
  • Compatible with standard 86mm square box and 60mm European box, adaptable to various installation environments;
  • New patented disassembly method for easy installation.

Core hot spots

  • Using ChatGPT to converse with the Al and send direct commands for temperature control;
  • Show energy savings from thermostat as money saved, for clear ROI;
  • Advanced option parameters can be set directly on the APP;
  • Equipped with smart learning algorithms to automatically learn user preferences and daily routines;
  • Exclusive app platform docking and network configuration are simpler;
  • Users can set timed tasks, and temperature schedules, and choose smart programming for personalized temperature control

Home screen and wiring


Information & Technical Data

  • Power Supply: 95 ~240 VAC, 50~60Hz
  • Current Load: 16A 3000W(electric heating) 20A 4000W (electric heating)
  • Sensor: NTC3950, 10K
  • Accuracy: +1°C
  • Set Temp Range: 5-35°C
  • Room Temp Range: 5-70°C
  • Display Temp. Range: 5 ~ 70°C
  • Ambient Temp.: 0~ 45°C
  • Ambient Humidity: 5 ~ 95 % RH (Non-Condensing)
  • Storage Temp.:-5~ 45°C
  • Power Consumption: <1. 5W
  • Timing Error: < 1%
  • Shell Material: PC +ABS ( Fireproof), PMMA
  • Installation Box: 86 * 86mm Square or European 60mm Round Box
  • Wire Terminals: Wire 2 x 1.5 mm or 1 x 2.5 mm?
  • Protection Class: IP20
  • Buttons: Knob + touch buttonexpert4house-BHT-18-AI-Knob-Thermostat-fig-4


Your thermostat is suitable for installation within a standard 86mm pattress box or a European 60mm pattress box.

  1. Accurately connect the power cable to the power terminal box.
  2. Fix the mounting plate on the cassette with a screwdriver through two screws.
  3. Hang the control panel onto the mounting plate
  4. Installation completed


During Power On

  1. Power On/off:
    • Press the knob to turn the thermostat on/off.
  2. Manual & Programmable
    • Touch to change between manual mode and program mode .
    • In manual mode, will show on the display,
    • In programmable mode, will show on the display.
  3. Setting Temperature
    • In the programming mode, the temperature setting and time setting will be locked.
    • If the user wants to adjust, he must first adjust the thermostat to manual mode by pressing the key.
    • In the manual mode, the desired temperature can be set by turning the knob.
  4. Adjusting/Setting the Clock
    • Press to set minutes, hours, and weekdays. and adjust the values by turning the knob.
    • Press once more to confirm and exit.
  5. Locking your Thermostat
    • Press and hold the and for 5 seconds to lock/unlock your thermostat.
    • In item 3 of high senior options, you can select full lock or half lock.
  6. Adjusting/Setting the Programmable Schedules
    • Press the icon four times in a row. You can see 1 2 3 4 5 and the minutes are flashing.
    • Turning the knob to set the minutes;
    • Press the icon again, and the hour of the time will flash, set the hour by turning the knob;
    • Press the icon again, the temperature setting will flash, set the temperature by turning the knob; This completes the setting of periods1.
    • In the same way, complete the settings of periods2, 3, 4,5and 6. Press the icon once more to enter the Saturday schedule settings (you will see the 6) of the screen).
    • Repeat the above process to set the period and temp. and * schedule.
    • Press the icon once more to confirm and exit.
    • Default settings for program scheduleexpert4house-BHT-18-AI-Knob-Thermostat-fig-15
    • A separate schedule may be set for weekdays (Mon – Fri) and for weekends (Sat or Sun).
  7. Checking the Temperature of Floor Sensor
    • Press and hold the arrow for 5 seconds to display the temp. of floor sensor. If no external sensor is connected, the thermostat will display “Er”.
    • Note: Do not use third-party external sensors, the temperature will be incorrect.
  8. Setting the Functions and Options
    • During power off, Press and hold and for & sec. to reach the system function. Then press to scroll through the available functions, and use turning the knob to change the available options. All settings are confirmed automatically.expert4house-BHT-18-AI-Knob-Thermostat-fig-16


  1. Install Zigma
    • A. Users can download the Zigma app through Google or the App Store;
    • B. Users can also open the browser, scan the QR code on the right, and download the Zigma app
  2. Configure the device
    • a. Open sigma app and click “+” in the upper right corner(Fig1.1);
    • b. Click Add a device(Fig1.2);
    • c. Scan the QR code of the thermostat on the right (Fig1.4) and turn on the Bluetooth on your phone (Fig1.3);
    • d. Select WiFi and input password (Requires 2.4GHz WiFi), Fig1.5;
    • e. Put the device into pairing mode as shown (Fig1.6-Fig1.8).expert4house-BHT-18-AI-Knob-Thermostat-fig-14
  3. APP application the interfaceexpert4house-BHT-18-AI-Knob-Thermostat-fig-14


Your thermostat carries a 24-month warranty from the date of purchase. Service out with the warranty period may incur a charge. For more detail please contact us directly.

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