Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your EZAIoT Smart Thermostat, Model EZ-R5W.723. This intelligent thermostat is designed for boilers and water floor heating systems, offering precise temperature control and smart home integration. It features WiFi connectivity, allowing remote control via the Smart Life application, and voice control compatibility with Amazon Alexa and Google Assistant.
Key features include:
- Smart control and energy saving via mobile app and voice assistants.
- Three optional operating modes: Manual, Automatic, and Temporary.
- Weekly programming with 5+2, 6+1, or 7-day schedules and 6 heating periods per day.
- Memory function to retain settings after power loss.
- Multifunctionality: Anti-freeze, child lock, group control, and family sharing.

Front view of the EZAIoT Smart Thermostat, displaying current and target temperatures.
Setup
1. Installation and Wiring
The thermostat is designed for 220V (3A) systems and is compatible with gas/combi boilers and water floor heating. It is not suitable for electric heating products such as heating cables, films, or pads. Installation should be performed by a qualified professional to ensure safety and proper functionality.
Wiring Instructions:
- Connect the Live Wire (L) and Neutral Wire (N) for power supply (AC100~240V).
- For electrothermal actuators, connect to NC (Normally-closed) or NO (Normally-open) terminals as required.
- For control boilers (passive switch), connect to the OPEN and CLOSE terminals (PC1, PC2).
CAUTION: Do not connect live wires directly to the "PC1" and "PC2" terminals or a short circuit will result. Ensure the power supply is disconnected before performing any wiring.

Detailed wiring diagram for the EZAIoT Smart Thermostat, illustrating connections for various heating systems.
Mounting: The thermostat can be mounted by screwing a metal plate to the wall and then attaching the thermostat and its frame using a metal clip. It is compatible with standard 86mm pattress boxes and European 60mm pattress boxes.

Dimensions of the EZAIoT Smart Thermostat and compatible wall box types.
2. App Connection (Smart Life)
To enable smart control features, connect your thermostat to the 'Smart Life' mobile application. This allows remote control and integration with voice assistants.
- Download the 'Smart Life' app from your smartphone's app store.
- Register or log in to your Smart Life account.
- Ensure your thermostat is powered on and in pairing mode (refer to the on-screen instructions or the quick start guide for specific pairing steps, usually involving holding a button while the device is off).
- In the app, tap '+' to add a new device and follow the on-screen prompts to connect your thermostat to your home WiFi network.
- Once connected, you can control the thermostat remotely and link it to Amazon Alexa or Google Assistant for voice commands.
Operating
1. Operating Modes
The thermostat offers three distinct operating modes to suit your needs:
- Manual Mode: Allows you to set a constant temperature that the thermostat will maintain until manually changed.
- Automatic Mode: Follows the pre-programmed weekly schedule.
- Temporary Mode: Allows a temporary override of the automatic schedule. The thermostat will maintain the new temperature until the next scheduled period begins, then revert to the automatic program.
2. Weekly Programming
The thermostat supports flexible weekly programming to optimize comfort and energy efficiency. You can set up to 6 heating periods per day with different temperature settings. Three weekly programming types are available:
- 5+2 Days: Weekdays (Monday-Friday) share one schedule, and weekends (Saturday-Sunday) share another.
- 6+1 Days: Monday-Saturday share one schedule, and Sunday has a separate schedule.
- 7 Days: Each day of the week can have its own unique schedule.
Programming can be done directly on the thermostat or more conveniently through the Smart Life app.

Weekly programming interface within the Smart Life application.
3. Advanced Features
- Memory Function: All settings are saved and retained even after a power outage, eliminating the need for re-configuration.
- Frost Protection: Automatically activates heating if the temperature drops below a set threshold to prevent pipes from freezing.
- Child Lock: Prevents unauthorized changes to settings by locking the thermostat's physical buttons. This can be activated via the thermostat or the app.
- Group Control: Manage multiple EZAIoT thermostats simultaneously through the Smart Life app.
- Family Sharing: Share control of the thermostat with other family members through the Smart Life app.
- Backlight Design: The thermostat features a backlight that automatically turns on in dark environments for improved visibility.

Overview of versatile features of the EZAIoT Smart Thermostat.

Illustration of the thermostat's backlight design for night visibility.
Maintenance
The EZAIoT Smart Thermostat requires minimal maintenance. To ensure optimal performance and longevity:
- Regularly wipe the thermostat's surface with a soft, dry cloth to remove dust.
- Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the device.
- Ensure the area around the thermostat is clear of obstructions to allow for accurate temperature readings.
Troubleshooting
If you encounter issues with your EZAIoT Smart Thermostat, consider the following common solutions:
- No Power/Display Off: Check the main power supply to the thermostat and ensure all wiring connections are secure.
- Incorrect Temperature Reading: Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its sensor. A temperature offset calibration might be available in the app settings.
- WiFi Connectivity Issues: Verify your home WiFi network is active and the thermostat is within range. Try restarting your router and the thermostat. Ensure the Smart Life app is updated to the latest version.
- Heating Not Activating: Check the operating mode (ensure it's not in an 'Off' or 'Frost Protection' state if you expect heating). Verify the set temperature is above the current room temperature. Inspect boiler connections.
- Buttons Unresponsive: Check if the child lock function is activated. Deactivate it via the app or by following the specific unlock procedure on the thermostat.
For persistent issues, refer to the support section or contact customer service.
Specifications
| Feature | Specification |
|---|---|
| Brand | EZAIoT |
| Model Number | EZ-R5W.723 |
| Color | White |
| Product Dimensions (L x W x H) | 4.3 x 8.59 x 9 cm |
| Weight | 180 grams |
| Power | 1.5 Watts |
| Voltage | 220 Volts |
| Material | Acrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC) Plastic |
| Connectivity Technology | Wi-Fi |
| Controller Type | Amazon Alexa, Google Assistant |
| Special Features | Programmable, Lockable, Date Display, Time Display, Temperature Display, Frost Protection, Automatic Remote Control Mode |
| Specific Uses for Product | Boiler, Water Floor Heating |
| Temperature Control Type | Heating |
| Power Source | Corded Electric |
| Components Included | 1 Thermostat, 2 Screws, 1 Instruction Manual |
Warranty and Support
Your EZAIoT Smart Thermostat comes with an instruction manual. For additional instructions, technical support, or warranty information, please contact EZAIoT customer service. Details for contacting support are typically found in the included manual or on the official EZAIoT website.





