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Description
In air conditioning (AC) systems, measurement and maintenance tools are essential to ensure efficiency, safety, and long service life. They are used for:
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Performance monitoring
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Diagnostics and safety
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Preventive and corrective maintenance
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Energy efficiency
For further information, please request the technical data sheet from our agents.




P/N 12.021
Digital pen thermometer with probe
Features
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Temperature range: -50°C ~ +300°C (-58°F ~+572°F)
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Distinguishing rate: 0.1°C (≤100°C); 0.5°C (>100°C)
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Accuracy: (-20°C ~ 80°C) ±1°C
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Power voltage: DC 1.5V
Functions
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Battery saving: auto-off aſter 40 minutes of no-operation
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Sensor fault display
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Switch between °C and °F
Buttons description
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[ON/OFF]: Press the key to turn the thermometer on/off
Auto-off aſter 40 minutes of no-operation.
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[°C/°F]: when the display is showing the temperature, press the key to switch between °C and °F.
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The display shows “LLL” when the sensor is on open circuit or the temperature is lower than measuring range; and shows “HHH” when the sensor has a short-circuit or the temperature is higher than measuring range.
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P/N 12.026
Digital pen thermometer with probe
Parameters
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Temperature range: -50°C~+300°C (-58°F~+572°F)
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Distinguishing rate: 0.1°C
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Accuracy: (-20°C~80°C)
Functions
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Switch between °C and °F
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Preserve data
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Maximum and minimum temperature memory
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Maximum and minimum temperature setting and alarm
Buttons description
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ON/OFF: Turn on/off the thermometer
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HOLD: Hold the measuring data
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SET: Set alarm
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ADJ: Set circle
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AC: Cancel alarm
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MAX/MIN: The maxim and minimum temperature
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OK: Confirm
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P/N 12.022
Infrared thermometer
Parameters
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Internal temperature measuring range: -30 to 50°C
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External temperature measuring range: -50 to 70°C
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Humidity measuring range: 20% RH to 99% RH).
Functions
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Measuring of internal and external temperature.
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Detecting internal humidity, with comfort level indicator.
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Memory for humidity and maximum/minimum temperature.
Technical features
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Power: 1.5V dc
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Dual external and internal temperature display
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Percentage humidity gauge
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Min. Temperature memorized max.
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Length of probe cable 2 m.
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Measuring range: from -50°c to +70°c
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Precision: ± 1°c
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Can be wall-mounted or used in the room
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P/N 12.028
Parameters
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Internal temperature measuring range: -30 to 50°C
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External temperature measuring range: -50 to 70°C
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Humidity measuring range: 20% RH to 99% RH).
Functions
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Measuring of internal and external temperature.
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Detecting internal humidity, with comfort level indicator.
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Memory for humidity and maximum/minimum temperature
Technical features
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Power: 1.5V dc
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Dual external and internal temperature display
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Percentage humidity gauge
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Min. Temperature memorized max.
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Length of probe cable 2 m.
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Measuring range: from -50°c to +70°c
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Precision: ± 1°c
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Can be wall-mounted or used in the room
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Digital thermo hygrometer





