Usmile S09
Usmile Smart WiFi Temperature Humidity Sensor with IR Remote Control User Manual
Model: S09
Introduction
This manual provides detailed instructions for setting up, operating, and maintaining your Usmile Smart WiFi Temperature Humidity Sensor with IR Remote Control. This device integrates temperature and humidity monitoring with universal infrared remote control capabilities, allowing for smart home automation and voice control via compatible platforms.
Product Features
- Integrated Temperature & Humidity Sensor: Real-time monitoring of indoor environment.
- Universal IR Remote Control: Controls a wide range of IR-controlled devices such as TVs, air conditioners, fans, and more.
- IR Learning Function: Allows customization for unsupported appliances by copying original remote key functions.
- App Remote Control: Manage appliances from anywhere using the "Smart Life" or "Tuya Smart" application.
- Voice Control Compatibility: Seamless integration with Amazon Alexa and Google Home for hands-free operation.
- Scenario and Automation: Create custom routines based on environmental conditions, device status, or time.
- LCD Screen Display: Provides direct display of temperature, humidity, time, and date.
- Compact Design: Small and lightweight, suitable for tabletop placement.
Package Contents

The package includes the Smart WiFi Temperature Humidity Sensor, a user manual, and a MicroUSB cable for power. Please ensure all items are present upon unboxing.
- 1 × Digital Temperature and Humidity Sensor
- 1 × User Manual
- 1 × MicroUSB Cable
Product Overview

Front View: Shows the LCD screen with temperature, humidity, day of the week, time, and date.

Back View: Displays product information including Model S09, power input (DC 5V/1A), WiFi frequency (2.4GHz), IR frequency (38KHz), and regulatory compliance marks.
The device features a clear LCD display on the front for immediate access to environmental data. The back panel provides essential product details and regulatory information.
Setup Guide
1. Powering On
Connect the provided MicroUSB cable to the device's power port and plug the other end into a 5V/1A USB power adapter (not included) or a compatible USB port. The device will power on and the display will activate.
2. App Installation
Download the "Smart Life" or "Tuya Smart" application from your smartphone's app store (Google Play Store for Android, Apple App Store for iOS). Register or log in to your account.
- Search for "Smart Life" or "Tuya Smart" in your app store.
- Install the application.
- Open the app and follow the on-screen instructions to register a new account or log in if you already have one.
3. Device Pairing (WiFi Connection)
Ensure your smartphone is connected to a 2.4GHz WiFi network. The device does not support 5GHz WiFi networks.
- Open the "Smart Life" or "Tuya Smart" app.
- Tap the "+" icon in the top right corner to add a device.
- Select "Sensor" or "IR Remote Control" from the device list, or use the auto-scan feature.
- Follow the app's instructions to put the device into pairing mode. This usually involves pressing and holding a button on the device until an indicator light flashes rapidly. (Refer to the small button on the back under the kickstand panel, as mentioned in a review, for potential reset/pairing).
- Enter your 2.4GHz WiFi network password when prompted.
- Wait for the device to connect. Once connected, the device will appear in your app.

The device is compatible with Smart Life and Tuya Smart apps, and integrates with Amazon Alexa and Google Assistant for voice control. It uses 2.4GHz WiFi for connectivity.
Operating Instructions
1. Temperature & Humidity Monitoring
Once connected, the device will continuously monitor and display the current temperature and humidity on its LCD screen. You can also view real-time data within the "Smart Life" or "Tuya Smart" app.

The app interface provides a clear display of temperature and humidity, allowing you to monitor your environment remotely.
2. IR Remote Control Function
The device acts as a universal IR remote. To add and control appliances:
- In the app, select your Smart IR Remote device.
- Tap "Add" or "Add Remote Control" to select the type of appliance you wish to control (e.g., TV, Air Conditioner, Fan).
- Follow the app's instructions to search for your appliance's brand and model. The app will provide pre-set remote codes.
- Test the remote functions to ensure proper control.
IR Learning Function
If your appliance's brand or model is not listed, or if the pre-set codes do not work, you can use the IR Learning function:

The IR Learning function allows you to customize control for devices not natively supported by copying signals from their original remote controls.
- In the app, select the IR Remote device and navigate to the IR Learning section.
- Choose the button you want to program (e.g., Power, Volume Up).
- Point your original remote control at the Smart IR Remote device (typically within 1-3 cm) and press the corresponding button on the original remote.
- The app will confirm successful learning. Repeat for all desired buttons.
3. Voice Control (Alexa & Google Assistant)
To enable voice control, link your "Smart Life" or "Tuya Smart" account with Amazon Alexa or Google Home:
- Open the Amazon Alexa or Google Home app.
- Go to "Skills & Games" (Alexa) or "Works with Google" (Google Home).
- Search for "Smart Life" or "Tuya Smart" and enable the skill/service.
- Link your Smart Life/Tuya Smart account by entering your credentials.
- Discover devices. Once linked, you can use voice commands like:
- "Alexa, turn on the TV."
- "Hey Google, set the air conditioning temperature to 25 degrees."
4. Scenario and Automation Setup
Create smart scenarios and automations within the "Smart Life" or "Tuya Smart" app to automate your home based on conditions:
- Scenarios: Combine multiple actions into a single tap. For example, a "Movie Night" scenario could turn on the TV, dim the lights, and set the AC.
- Automations: Set up rules to trigger actions automatically. Examples:
- If temperature rises above 26°C, turn on the air conditioner.
- If humidity drops below 50%, turn on the humidifier.
- Turn off all devices when you leave home (based on location).
5. Sharing Device
You can share control of the device with family members or other users through the app:

The app allows you to easily share control of your smart devices with other users, enabling multiple family members to manage home appliances.
- In the app, select the device you wish to share.
- Go to the device settings (usually represented by a pencil icon or three dots).
- Select "Share Device" or "Device Sharing".
- Enter the account details (phone number or email) of the person you want to share with. They must also have a Smart Life/Tuya Smart account.
- The invited user will receive a notification and can accept the shared device.
Specifications
| Parameter | Value |
|---|---|
| Support APP | Smart Life/Tuya Smart |
| Voice Control | Google Home, Amazon Alexa |
| LED Indicator | Blue |
| IR Frequency | 38KHz |
| WiFi Frequency | 2.4GHz IEEE 802.11 b/g/n |
| Input | DC 5V/1A |
| IR Range | 10 Meters |
| Humidity Measure Range | 0%-99% RH |
| Temperature Measure Range | 0-60°C |
| Temperature Measure Accuracy | ±1°C |
| Humidity Measure Accuracy | ±5% RH |
| Compatible OS | Android 4.4 and above, iOS 8.0 and above |
| Model | S09 |
| Color | Black |
| Mounting Type | Tabletop |
| Dimensions | 4.8 x 3.1 x 0.9 inches |
| Weight | 1.6 ounces |
Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or sprays.
- Placement: Place the device in a stable location, away from direct sunlight, heat sources, and areas with high humidity or extreme temperature fluctuations to ensure accurate readings.
- Power: Ensure a stable 5V/1A power supply. The device does not have an internal battery and must remain plugged in to operate.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | No power supply or faulty cable/adapter. | Ensure the MicroUSB cable is securely connected and the power adapter is working. Try a different cable or adapter. |
| Cannot connect to WiFi. | Incorrect WiFi password; 5GHz WiFi network; device too far from router; device not in pairing mode. | Verify WiFi password. Ensure you are connecting to a 2.4GHz network. Move the device closer to the router. Re-enter pairing mode by pressing the reset button (small button on the back). |
| IR remote control not working for an appliance. | Incorrect remote code selected; appliance not supported; device not in line of sight. | Try different pre-set codes in the app. Use the IR Learning function to program the remote. Ensure the Smart IR Remote has a clear line of sight to the appliance. |
| Temperature/Humidity readings seem inaccurate. | Device placed near heat/cold sources or in direct sunlight; sensor obstructed. | Relocate the device to a central area away from direct environmental influences. Ensure the sensor vents are not blocked. |
| Voice control not responding. | Account not linked; device not discovered; incorrect voice command. | Verify that your Smart Life/Tuya Smart account is correctly linked to Alexa/Google Home. Re-discover devices in the voice assistant app. Use precise voice commands as specified in the app. |
| Device reverts to Celsius after unplugging. | Default setting behavior. | Press the small button on the back under the kickstand panel to switch between Celsius and Fahrenheit. This setting may need to be reapplied after power loss. |
Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product packaging or visit the official Usmile website. You may also contact the seller directly through the platform where the product was purchased for assistance.
Please retain your proof of purchase for any warranty claims.
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