1. Introduction
This Rti-Tek R9W.716 series of smart thermostats is designed to provide precise temperature control for various heating systems, including electric floor heating, water heating, and gas boilers. Featuring an ultra-large colorful VA screen with capacitive touch buttons, it offers a user-friendly interface and supports remote control via the Smart Life or TuyaSmart app, as well as voice control through Amazon Alexa and Google Assistant.
The thermostat includes built-in temperature sensors and offers weekly programming options to comfortably adjust your desired temperature settings.

2. Product Highlights
- App Remote Control: Control your smart WiFi thermostat remotely using the free Smart Life or TuyaSmart app from anywhere, anytime.
- Voice Control: Compatible with Amazon Alexa and Google Home for convenient voice commands.
- Manual/Auto Mode: Easily switch between manual and automatic operating modes.
- Temperature Display: Supports both Celsius and Fahrenheit temperature units.
- Weekly Programmable: Customize temperature settings with up to 6 time-modes daily for 7 days.
- Memory Function: Data is saved during power outages, ensuring settings are retained.
- Children Lock: Keypad locking function prevents accidental operation by children.
- Versatile Application: Suitable for electric floor heating, water heating systems, and gas boilers.
- 2.5D Tempered Glass: Fashionable and enduring screen, resistant to breakage.
- Ultra-large VA Screen: Provides wide viewing angles, high brightness, and high contrast for clear display.
- Intelligent Weather Display: (Wi-Fi version only) Displays humidity and various weather conditions (sunny, cloudy, rainy, snowy) when connected to the internet.
- Energy-saving Mode: Quickly adjusts temperature to an ECO setting (18°C) with a single press.

3. Technical Specifications
| Attribute | Value |
|---|---|
| Model Number | R9W.716 |
| Brand Name | Rti-Tek |
| Product Type | Tuya Smart thermostat floor heating |
| Wattage | AC100~240V; 50/60Hz |
| Power Consumption | <1W (Wi-Fi version 1.5W Max) |
| Current Load | 16A (for Electric Heating) / 3A (for Water/Gas Boiler) |
| Certification | CE, RoHS |
| APP | Tuya Smart/Smart Life |
| Shell Material | Anti-Flammable PC |
| Temperature Setting Range | 5~95°C |
| External Sensor Upper Limit | 5~60°C |
| Switch Deviation | 0.5~10°C (Factory setting 1°C) |
| Ambient Temperature | -5~50°C |
| Protection Level | IP20 |
| Voice Control | Amazon Alexa / Google Assistant |
| Suitable for | Electric Warm Floor Heating System, Water/Gas Boiler |
| Color | White/Black (Option) |
| Sensor | 16A model thermostat includes floor sensor; 3A model thermostat without floor sensor |
Package Dimensions and Weight
- Length: 20 cm
- Width: 15 cm
- Height: 10 cm
- Weight: 0.4 kg


4. Setup and Installation
The thermostat is designed for easy mounting with a pre-guide and limited snap-fit mechanism. Ensure power is off before installation.
4.1 Mounting Steps
- Release Front Cover: Insert a head screwdriver into the bottom crack of the thermostat to release the front cover.
- Connect Wires: Connect wires to the terminal block according to the specific wiring schematic for your model. A suggested copper wire length is 7-9mm.
- Attach Thermostat Base: Secure the thermostat base to the wall-cassette using two mounting screws. Ensure there is no deformation on the thermostat. Suggested torque is 0.2~0.4N.m (2.0~4.1kgf.cm).
- Re-mount Front Cover: Re-attach the front cover via the snap-fit connection.
4.2 Wiring Diagrams
The thermostat operates in full capacity in areas with an altitude of less than 2500m above sea level. For altitudes between 2500m and 4200m, the power rating of the external load should be less than or equal to 80% of the thermostat's rated power.
Model R9W.716: 16A WiFi Electric Floor Heating Thermostat

Model R9W.703: 3A WiFi Radiant Water Underfloor Heating Thermostat

Model R9W.723: 3A WiFi Gas Boiler Heating Thermostat

5. Operating Instructions
5.1 Display Symbols

5.2 User Operation
- Power On/Off: Press the power button (
) shortly to turn the thermostat on or off. - Time Setting: Press and hold the 'M' button for 3 seconds to enter time setting. Use the up (
) or down (
) buttons to adjust the week day and clock. Confirm by pressing 'M' shortly. - Temperature Setting: Press the up (
) or down (
) buttons shortly to increase or decrease the setpoint temperature by 0.5°C.
5.3 Temperature Control Mode
Press the 'M' button shortly to switch between manual mode and auto mode.
- Manual Mode: The temperature is controlled according to the current temperature set via the up or down buttons. It remains active until the next manual change.
- Auto Mode: The temperature is controlled according to the set heating profile. Manual changes are active until the next profile change.
5.4 Weekly Programming Setting
The thermostat allows for up to 6 heating events with individual temperature settings for weekdays and weekends. To enter weekly programming setting, press and hold the 'M' button for 3 seconds. Adjust items by pressing 'M' and set values with up or down buttons. Confirm by pressing 'M' shortly.

| Events | Symbols | Time (Default) | Temp. (Default) |
|---|---|---|---|
| Wake up; Event 1 | 06:00 | 20°C | |
| Leave (am); Event 2 | 08:00 | 15°C | |
| Return (am); Event 3 | 11:30 | 15°C | |
| Leave (pm); Event 4 | 12:30 | 15°C | |
| Return (pm); Event 5 | 17:00 | 22°C | |
| Sleep; Event 6 | 22:00 | 15°C |
5.5 Child Lock
To activate child lock, press and hold the 'M' button and the up (
) button simultaneously for 3 seconds. The thermostat will be locked to prevent accidental changes. To deactivate, press and hold both keys again.

5.6 ECO Mode
Press the leaf icon button (
) shortly to enter ECO mode. The temperature will be set to 18°C. This mode is designed for energy saving.

6. App Integration and Voice Control
6.1 Connecting to Smart Life/TuyaSmart App
To connect the thermostat to your smartphone app:
- Ensure the thermostat is powered off.
- Press and hold the down (
) button for 3 seconds to enter Wi-Fi configuration mode. - Open the Smart Life or TuyaSmart app on your smartphone and follow the in-app instructions to add the thermostat.
6.2 Voice Control
The Rti-Tek R9W.716 thermostat is compatible with Amazon Alexa and Google Assistant. Once connected to the Smart Life/TuyaSmart app and linked with your voice assistant, you can control your heating system using simple voice commands. For example, you can say, "Alexa, set the room temperature to 22 degrees Celsius."

7. Troubleshooting
7.1 Sensor Failure
If the thermostat displays an Er0 or Er1 error, it indicates a sensor issue. The thermostat will remain powered off until the error is resolved.
- Er0: Built-in sensor is short-circuited or disconnected.
- Er1: External sensor is short-circuited or disconnected.
Ensure the sensor is correctly connected according to your sensor selection setting. If the issue persists after checking connections, the sensor may need replacement.
7.2 General Non-functionality
All thermostats undergo rigorous testing before shipment. If your thermostat does not function upon receipt, please contact customer support within 7 days. If the issue is determined to be a manufacturing defect, a replacement or appropriate refund will be arranged.
8. User Tips
- Power Calculation: When using with heating cables, ensure the total power of your heating system does not exceed 3500W for the 16A model. Always calculate your cable's total power and compare it with the thermostat's maximum capacity.
- Quality Assurance: The thermostat is constructed with imported PC fire-resistant material, ensuring durability and safety. Be cautious of inferior imitations that may degrade over time.
- PDF Manual: For more detailed instructions and advanced settings, please refer to the comprehensive user manual available in PDF format.
9. Warranty and Support
This product comes with a 2-year warranty. For any issues, technical assistance, or warranty claims, please contact the seller or manufacturer directly. Provide your product model number (R9W.716) and a detailed description of the problem to facilitate quicker support.

A detailed user manual in PDF format is available for download. This document contains comprehensive information on installation, operation, and advanced features.