1. Introduction
The Beok BOT-R15W Smart Thermostat is an intelligent temperature controller designed for gas wall-mounted boilers and water underfloor heating systems. It compares the ambient room temperature with your set desired temperature to control your heating or cooling system, ensuring comfort and promoting energy savings. This thermostat supports Wi-Fi connectivity via Tuya/Smart Life app and is compatible with voice assistants like Amazon Alexa and Google Home.

Figure 1: Beok BOT-R15W Smart Thermostat, showing battery power, Tuya Wi-Fi, and compatibility with Google Assistant and Amazon Alexa.
2. Package Contents
Please check the package for the following items:
- Beok BOT-R15W Smart Thermostat
- USB-C Power Cable
- Mounting Screws (2x)
- User Manual (this document)

Figure 2: Thermostat on a wall next to a smartphone displaying the Tuya Smart Life app interface for temperature control.
3. Product Overview and Screen Display
The thermostat features a clear LCD display and touch-sensitive keys for easy operation. It supports both heating and cooling modes.

Figure 3: The thermostat indicating its functionality for both heating and cooling systems.
Screen Display Icons:

Figure 4: Detailed view of the thermostat's screen display and the meaning of each icon.
- Wi-Fi Connected: Indicates successful connection to a Wi-Fi network.
- Frost on: Frost protection is active.
- Cooling mode: The thermostat is operating in cooling mode.
- Manual mode: Temperature is set manually.
- Auto mode: The thermostat is following a programmed schedule.
- Heating mode: The thermostat is operating in heating mode.
- Heating / Cooling on: Indicates the system is actively heating or cooling.
- Key Locked: Child lock function is active.
- Battery level: Shows the current battery charge.
- ROOM: Displays the current room temperature.
- SET: Displays the set target temperature.
- V O ^: Touch keys for navigation and adjustment.
4. Powering the Device
The Beok BOT-R15W thermostat offers flexible power options:

Figure 5: The thermostat showing options for power: 3x AAA batteries or USB-C cable.
- 3x AAA Batteries: Insert three AAA alkaline batteries into the battery compartment located at the back of the thermostat. Ensure correct polarity (+/-).
- USB-C Powered: Connect the provided USB-C cable to the thermostat's USB-C port and to a standard USB power adapter (not included).
Note: Do not use rechargeable batteries as their voltage may be insufficient for stable operation. If using batteries, ensure they are fresh for optimal performance.
5. Installation & Wiring
Warning: Installation should be performed by a qualified electrician or experienced individual. Ensure the main power supply to your boiler is turned OFF before proceeding with any wiring.
5.1 Mounting the Thermostat
- Choose a suitable location on an interior wall where the thermostat screen is easily visible and accessible for adjustment.
- Ensure the location represents the overall ambient temperature of the room. Avoid placing it near heat sources (e.g., radiators, direct sunlight) or cold drafts (e.g., windows, ventilation openings).
- Separate the front display unit from the backplate.
- Mark the positions for drilling holes using the backplate as a template.
- Drill the holes and insert wall plugs if necessary.
- Secure the backplate to the wall using the provided screws.
5.2 Wiring Diagram (Potential-Free Contact)
This thermostat works with gas boilers having potential-free control terminals (dry contact). The wiring involves connecting the thermostat's NO (Normally Open) and COM (Common) terminals to your boiler's control terminals.

Figure 6: Internal view of the thermostat showing battery compartment, wiring terminals (NO COM NC), and how it fixes with screws. The diagram illustrates connecting NO and COM to the boiler's control terminals.
- Ensure the main power to your boiler is OFF.
- Connect the ignition signal wires from your gas boiler to the NO (Normally Open) and COM (Common) terminals on the thermostat's backplate.
- If your boiler requires a Normally Closed (NC) contact, use the NC and COM terminals instead, but most gas boilers use NO/COM. Consult your boiler's manual if unsure.
- Once wiring is complete, carefully attach the front display unit to the backplate, ensuring it clicks securely into place.
- Restore power to your boiler.
6. Setup (App & Wi-Fi)
To unlock the full smart features of your thermostat, connect it to your home Wi-Fi network and the Tuya Smart Life app.
6.1 Download the App
- Download the