Description
Product Overview
The UNI-T UT333S is a split-probe digital temperature and humidity meter designed for environmental monitoring in locations where direct access is difficult. Unlike a conventional handheld hygrometer with an integrated sensor, this model uses a separate probe connected to the main unit by a coiled cable.
This design makes the UT333S useful for measuring temperature and relative humidity inside ventilation ducts, storage areas, refrigerators and other suitable environments. Its LCD displays readings, while built-in functions help users record and compare environmental measurements.
Test & Measurement Tools and Solutions
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Technical Specifications
Specification Details
Brand UNI-T
Model UT333S
Product type Split-probe digital temperature and humidity meter
Temperature range −10°C to 60°C (14°F to 140°F)
Temperature resolution 0.1°C / 0.2°F
Temperature accuracy ±1°C / ±2°F
Relative humidity range 0–100% RH
Humidity resolution 0.1% RH
Humidity accuracy ±5% RH at 20–80% RH
Sampling rate 1 reading per second
Display LCD, 32 × 35 mm
Sensor design Separate probe with coiled cable
Functions MAX/MIN, data hold, backlight, °C/°F selection, overload alarm and auto power-off
Power supply 3 × 1.5V R03/AAA batteries
Body dimensions 110 × 53 × 26 mm
Manufacturer-listed weight 310 g
Certifications CE and UKCA
Specifications are based on UNI-T’s published UT333S documentation. Confirm the manufacturer’s instructions for the intended measurement environment before use.
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Key Features
– Separate sensor probe: Measures conditions in spaces that are difficult to reach with the main meter.
– Temperature measurement: Measures temperatures from −10°C to 60°C.
– Humidity measurement: Measures relative humidity across a 0–100% RH range.
– MAX/MIN recording: Helps identify the highest and lowest recorded readings.
– Data hold: Keeps displayed readings visible for recording.
– Backlit LCD: Improves screen visibility in low-light conditions.
– Selectable temperature units: Switches between Celsius and Fahrenheit.
– Overload indication: Alerts users when readings exceed the instrument’s specified limits.
– Automatic power-off: Helps conserve battery power.
Test & Measurement Tools and Solutions
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Applications
The UNI-T UT333S can support:
– HVAC and ventilation duct inspections.
– Temperature and humidity monitoring in storage areas.
– Refrigerator and cold-storage checks.
– Warehouse and material-storage monitoring.
– Agricultural storage and grain transportation environments.
– Indoor environmental testing.
– Educational and laboratory measurements.
– General building maintenance and environmental inspections.
Buyer Guidance
Choose the UNI-T UT333S when a separate sensor probe is useful for accessing a measurement location. Before ordering, confirm the required temperature and humidity ranges, the accuracy needed for your application, and the suitability of the probe for the intended environment.
The UT333S is an environmental measurement instrument, not a conventional multimeter. It belongs in the temperature and humidity meter category.
UAE Availability and Quotation
Dynavation Star Electrical Fittings Trading LLC supplies electronic and test-and-measurement products to customers across the UAE. Contact the team to confirm the UNI-T UT333S’s current price and availability.
Contact Dynavation Star on WhatsApp for a quotation

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