Introduction
The ThermoPro TP50 Digital Hygrometer and Thermometer is designed to provide accurate and reliable measurements of indoor temperature and humidity. This device helps you monitor your home environment, ensuring optimal comfort and health conditions. With its clear display and practical features, the TP50 is an essential tool for any household.

Figure 1: Two ThermoPro TP50 units displaying indoor temperature and humidity.
Key Features
- Air Comfort Indicator: Displays DRY/COMFORT/WET conditions with an intuitive icon.
- High Accuracy: Provides precise readings with ±2-3%RH and ±1°F accuracy.
- Quick Refresh Rate: Updates measurements every 10 seconds for real-time monitoring.
- High & Low Records: Tracks and displays daily high/low temperature and humidity levels.
- Versatile Placement: Features a tabletop stand and a magnetic back for flexible positioning.
- °F/°C Selector: Easily switch between Fahrenheit and Celsius temperature units.
- Battery Powered: Operates on one AAA battery (included).

Figure 2: Overview of the ThermoPro TP50's main features.
Setup
- Battery Installation: Open the battery compartment cover on the back of the unit. Insert one AAA battery, ensuring the correct polarity (+/-). Close the battery compartment cover securely.
- Initial Placement: Place the unit on a flat surface using the foldaway tabletop stand, or attach it to a metal surface (like a refrigerator) using the magnetic back.
- Unit Selection: Press the °F/°C button on the back of the unit to select your preferred temperature unit (Fahrenheit or Celsius).

Figure 3: Back of the TP50 unit, highlighting battery and control features.
Operating Instructions
Reading the Display
The large LCD display shows current humidity (top), current temperature (middle), and the daily high/low records for both humidity and temperature (bottom).

Figure 4: The large display with big digits ensures easy readability from a distance.
Air Comfort Indicator
The comfort level icon (smiley face) indicates the current air conditions:
- DRY: Humidity below 30%
- COMFORT: Humidity between 30% and 60%, and temperature between 68°F and 78.8°F (20°C and 26°C)
- WET: Humidity above 60%

Figure 5: Air Comfort Indicator helps optimize your home for a healthier life.
Min/Max Records
The TP50 automatically records the highest and lowest temperature and humidity readings since the last reset. To clear the records, press and hold the "CLEAR" button on the back of the unit for 3 seconds.
Video 1: Official ThermoPro video demonstrating the TP50 Temperature and Humidity Monitor's features and usage.
Maintenance
- Cleaning: Wipe the unit with a soft, damp cloth. Do not use abrasive cleaners or immerse the unit in water.
- Battery Replacement: Replace the AAA battery when the display dims or the unit stops functioning. Ensure proper polarity during installation.
- Storage: If storing the unit for an extended period, remove the battery to prevent leakage and damage. Store in a cool, dry place.
Troubleshooting
Inaccurate Readings
- Relocation: Ensure the unit is placed away from direct sunlight, heat sources (like vents or appliances), and areas with high airflow (like open windows or fans) which can affect readings.
- Calibration: While the TP50 is factory calibrated, significant discrepancies with other reliable instruments might indicate an issue. Ensure both devices are in the same stable environment for comparison.
Display Not Working
- Check Battery: Verify the battery is correctly installed and has sufficient charge. Replace with a new AAA battery if necessary.
- Reset: Remove the battery, wait a few seconds, and then reinsert it to perform a soft reset.
Specifications
| Feature | Detail |
|---|---|
| Temperature Range | -58°F to 158°F (-50°C to 70°C) |
| Temperature Accuracy | ±1°F (±0.5°C) |
| Humidity Range | 10% to 99% RH |
| Humidity Accuracy | ±2-3% RH |
| Refresh Rate | 10 seconds |
| Power Source | 1 x AAA Battery (Included) |
| Dimensions | 3.1" H x 2.6" W x 0.8" D |
| Mounting Options | Tabletop Stand, Magnetic Back |

Figure 6: Technical specifications of the ThermoPro TP50.
Warranty & Support
ThermoPro offers a 1-year warranty for the TP50 Digital Hygrometer and Thermometer. For any product inquiries, troubleshooting assistance, or warranty claims, please contact ThermoPro Customer Service:
- Phone: 1-877-515-7797
- Hours: Monday - Friday, 8:00 AM - 6:00 PM (EST)
- Website: www.thermopro.com
Please have your model number (TP50-2) and purchase information ready when contacting support.





