The UNI-T UT333 is a compact digital temperature and humidity meter (thermo-hygrometer) designed for quick, reliable measurement of environmental conditions like air temperature and relative humidity — useful in homes, offices, storage areas, labs, greenhouses, and more.

🌡️ Key Features

• Temperature Measurement: −10 °C to 60 °C (14 °F to 140 °F) with ±1 °C (±2 °F) accuracy and 0.1 °C (0.2 °F) resolution.

• Humidity Measurement: 0 % to 100 % RH with ±5 % RH accuracy and 0.1 % RH resolution.

• LCD Display: Shows temperature and humidity simultaneously, with a backlight for low-light visibility.

• MAX/MIN Memory: Records highest and lowest measured values for trend analysis.

• Data Hold: Freezes the current reading on the screen.

• °C/°F Conversion: Easily switch between Celsius and Fahrenheit units.

• Auto Power Off: Helps conserve battery when idle.

• Low Battery Indicator: Alerts when batteries need replacing.

• Overload Indicator: Shows “OL” when a reading is outside measurable range.

🔋 Power & Design

• Power Supply: 3 × AAA 1.5 V batteries (often included).

• Size & Weight: Lightweight and portable (~102 g; 155×50×28 mm), easy to carry or store.

• Ergonomics: Compact and user-friendly with a clear button layout and readable display.

📈 Typical Use Cases

• Monitoring indoor air quality

• Checking environmental conditions during storage or transport

• Use in HVAC maintenance, laboratories, greenhouses, and animal habitats

• Classroom experiments or scientific project