1. Introduction
Congratulations on your purchase of a Smart, Remote Bluetooth Thermometer & Hygrometer. This device allows you to remotely monitor the current temperature and humidity of your living room, bedroom, greenhouse, or other environments from your smartphone. You can also view historical data and export it via email.
Components:
- 1 x Bluetooth Thermometer & Hygrometer (TP351)
- 2 x AAA Batteries (Not included)
- 1 x Rope
- 1 x Quick Start Guide
2. Specifications
| Feature | Detail |
|---|---|
| Technology | Remote Bluetooth |
| Bluetooth Version | 5.0 |
| Bluetooth Range | 260ft (80m) |
| Temperature Range | -4°F~140°F (-20°C~60°C) |
| Temperature Accuracy | ±0.5°F (±0.3°C) from 32 to 140°F (0 to 60°C), otherwise ±0.9°F (±0.5°C) |
| Humidity Range | 10%~99% |
| Humidity Accuracy | ±2% from 30% to 80%, otherwise ±3% |
| Refresh Rate | 10 seconds |
| Power Supply | 2x AAA 1.5V (Not included) |
| Certification | CE |
| Smart Device | Yes |
| Data Record | Yes |
| Display Type | DIGITAL |
| Style | Standing and Wall Hanging |
3. Setup
3.1. Insert Batteries
Insert 2 x AAA batteries into the battery compartment on the back of the thermometer. Ensure correct polarity (+) and (-) as indicated inside the compartment.

3.2. Download the ThermoPro Sensor APP
Download the ThermoPro Sensor APP from the APP Store (for iOS devices) or Google Play (for Android devices). Scan the QR codes below for direct access:

3.3. Connect to Bluetooth
- The Bluetooth function of the device is enabled by default. Enable Bluetooth on your phone and keep it close to the device. (Location Services/GPS should be turned on for Android 12 or below users).
- Open the ThermoPro Sensor APP, touch the "Add Device" button in the lower middle of the screen and search for the device named "TP351(X)".
- Touch the “+” icon behind "TP351(X)" to add this device to the APP. The App will then jump to the device list page, showing real-time temperature and humidity.

4. Operating the ThermoPro Sensor APP
4.1. App Interface Overview
The app displays current temperature, humidity, and a heat index. You can view data trends over different timeframes (Hour, Day, Week, Month, Year).

4.2. Viewing Detailed Information
Touch the paired device in the list of "My Device(s)" to check more detailed information, including historical graphs.
4.3. Renaming Your Device
Touch the device name (e.g., TP351S) in the middle of the top bar to rename your device for easier identification.
4.4. Setting Temperature and Humidity Alerts
To adjust device settings, touch the "≡" button in the upper right corner of the app. From here, you can:
- Access the main menu for FAQs, Contact Us, and temperature unit settings.
- Touch "Alert Setting" to enable/disable temperature or humidity alarms.
- Set your desired MAX/MIN temperature or humidity range.

4.5. Data Logging and Export
The device supports 2-year data storage. You can export the historical data via email from the app settings.

5. Maintenance
5.1. Battery Replacement
When the battery indicator on the device or app shows low power, replace the 2 AAA batteries. Ensure correct polarity during installation.
5.2. Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.
6. Troubleshooting
- Cannot connect to the app: Ensure Bluetooth is enabled on your phone and the device is within range (260ft/80m). For Android 12 or below, ensure Location Services/GPS is turned on. Try restarting both the device and your phone.
- Temperature/Humidity readings seem inaccurate: Allow 10-15 minutes for initial setup and stabilization for optimal accuracy. Ensure the device is not placed in direct sunlight, near heat sources, or in areas with extreme drafts.
- Changing Temperature Unit (°C/°F): The temperature unit can be changed within the ThermoPro Sensor APP settings. There may also be a physical button or switch on the device itself to change the display unit.
- Is the device waterproof? No, the ThermoPro TP351 is not waterproof. Avoid exposing it to water or high humidity environments beyond its specified operating range.
7. User Tips
- For optimal accuracy, please allow 10-15 minutes for initial setup after inserting batteries.
- Regularly update the ThermoPro Sensor app to ensure optimal connection stability and access to the latest features.
- The device provides reliable real-time and accurate temperature and humidity statistics, integrating well with the app for a seamless monitoring experience.
8. Warranty and Customer Support
8.1. Limited One-year Warranty
ThermoPro warrants this product to be free of defects in parts, materials, and workmanship for a period of one year from the date of purchase.
8.2. Customer Service
Should any repairs or servicing under this warranty be required, contact Customer Service for instructions on how to pack and ship the product to ThermoPro.
- Telephone:
- 1-877-515-7797 (USA & Canada)
- 49-215-493-19011 (DE)
- 44-808-164-1683 (UK)
- 61-180-057-7492 (AU)
- Email: service@buythermopro.com
- Operating Hours: Monday-Friday: 8:00am-8:00pm (EST)
For additional information, you may refer to the official user manual PDF: View User Manual (PDF)
9. Environmental Disposal Information
9.1. Meaning of the "Dustbin” Symbol
This symbol indicates that electrical equipment should not be disposed of with domestic waste. It helps protect our environment by preventing potential negative effects of incorrect disposal on the environment and human health.
9.2. Device Disposal
Please return any electrical equipment that you will no longer use to the collection points provided by your local authority. This contributes to the recycling and re-utilization of electrical and electronic equipment.
9.3. Battery Disposal
Batteries/rechargeable batteries must not be disposed of with household waste. They must be removed from the appliance and taken to appropriate collection points or to a dealer. The symbol on batteries may indicate hazardous substances:
- Pb: contains lead
- Cd: contains cadmium
- Hg: contains mercury
- Li: contains lithium