Introduction
The ThermoPro TP350 is an advanced Bluetooth-enabled hygrometer and thermometer designed to accurately monitor temperature and humidity levels in various indoor environments. With its high accuracy, fast response time, and convenient app control, it provides comprehensive data for maintaining optimal conditions in your home, greenhouse, baby room, or wine cellar.

Figure 1: ThermoPro TP350 device and companion mobile application.
Key Features:
- App Control: Monitor temperature and humidity from up to 260 feet away via Bluetooth. The ThermoPro App does not require user registration.
- Data Storage and Export: Access up to 2 years of historical data and export it for analysis.
- High Accuracy: Equipped with an advanced NTC sensor for precise readings (±0.9°F and ±2% RH) with a 10-second refresh rate.
- Backlit Display: Large, backlit LCD ensures clear visibility in low-light conditions.
- Comfort Indicator: A face icon provides a quick visual cue for environmental comfort levels.
- Multiple Usages: Ideal for monitoring bedrooms, baby rooms, musical instrument rooms, cigar rooms, greenhouses, and more.

Figure 2: The ThermoPro TP350 is suitable for a wide range of indoor environments.
Setup
1. Battery Installation
The ThermoPro TP350 requires 2 AAA batteries (included). To install:
- Locate the battery compartment on the back of the device.
- Open the battery cover.
- Insert the 2 AAA batteries, ensuring correct polarity (+/-).
- Close the battery cover securely.
2. Device Placement
The TP350 offers multiple placement options:
- Tabletop: Use the integrated kickstand to place the device on any flat surface.
- Surface Mount: The device features a strong magnet on its back, allowing it to be attached to metallic surfaces like refrigerators.
- Hanging Hole: Utilize the hanging hole to mount the device on a wall or hook.

Figure 3: Versatile mounting options for the TP350.
3. App Download and Connection
To utilize the Bluetooth features and remote monitoring, download the ThermoPro App:
- Scan the QR code provided in the quick start guide or search for "ThermoPro" in your device's app store (App Store for iOS, Google Play Store for Android).
- Install the app.
- Ensure Bluetooth is enabled on your smartphone.
- Open the ThermoPro App. The device should automatically connect. If not, follow the in-app instructions to pair.

Figure 4: Monitor your environment remotely with the ThermoPro App.
Operating Instructions
1. Reading the Display
The large LCD displays current temperature and humidity, along with min/max records for the last 24 hours. The comfort indicator provides a quick visual reference.

Figure 5: Understanding the comfort indicator and display readings.
2. Activating Backlight
To activate the backlight for improved visibility in low-light conditions, simply touch the top of the device. The backlight will illuminate for a few seconds.

Figure 6: Touch the top to activate the backlight.
3. Data Export and Historical Records
The ThermoPro App allows you to view historical temperature and humidity data for up to 2 years. You can also export this data for further analysis or record-keeping.
- Open the ThermoPro App on your smartphone.
- Navigate to the data history section.
- Select the desired time frame (e.g., hour, day, week, month).
- Use the export function within the app to save data, typically in a CSV format.

Figure 7: Data export feature for long-term monitoring.
Maintenance
Cleaning
To ensure accurate readings and prolong the life of your device, keep it clean. Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or immerse the device in water.
Battery Replacement
When the battery indicator on the display shows low power, replace the batteries promptly to maintain continuous operation and data logging.
- Open the battery compartment on the back.
- Remove the old AAA batteries.
- Insert new 2 AAA batteries, observing correct polarity.
- Close the battery compartment.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display or faint display | Low batteries or incorrect battery installation. | Replace batteries with new AAA batteries, ensuring correct polarity. |
| Bluetooth connectivity issues | Device out of range, Bluetooth off on phone, or interference. | Move device closer to phone (within 260ft), ensure Bluetooth is on, restart app/phone. |
| Inaccurate readings | Sensor obstruction, extreme environmental conditions, or device malfunction. | Ensure sensor vents are clear, move device to a stable environment, or contact support if issues persist. |
| Data export not working | App permissions, insufficient storage, or app glitch. | Check app permissions for storage access, clear app cache, or reinstall the app. |
Specifications
| Feature | Detail |
|---|---|
| Brand | ThermoPro |
| Model Number | TP350 |
| Connectivity | Bluetooth (up to 260FT range) |
| Temperature Accuracy | ±0.9°F (±0.5°C) |
| Humidity Accuracy | ±2% RH |
| Refresh Rate | 10 seconds |
| Data Storage | Up to 2 years |
| Power Source | 2 x AAA batteries (included) |
| Mounting Type | Tabletop, Surface Mount (magnet), Hanging Hole |
| Item Weight | 7 ounces |
| Package Dimensions | 5.47 x 3.54 x 1.34 inches |
Warranty and Support
Warranty Information
ThermoPro products typically come with a limited warranty. For specific details regarding the warranty period and terms for your TP350 device, please refer to the warranty card included in your product packaging or visit the official ThermoPro website.
Customer Support
If you encounter any issues or have questions about your ThermoPro TP350, please contact ThermoPro customer support. You can find contact information and frequently asked questions on the official ThermoPro website: