Luvinka TR933A Digital Indoor / Outdoor Thermometer

The Luvinka TR933 Digital Indoor & Outdoor Thermometer is a high-precision monitoring device designed for industrial and commercial applications. Ideal for greenhouses, pools, saunas, factories, hospitals, schools, and offices, it provides simultaneous indoor and outdoor temperature monitoring to help maintain optimal environmental conditions. Its large 25 cm display, oversized digits, and dual-sensor system ensure excellent visibility and reliable performance.

Features

• Large Display: The 25 cm LCD screen ensures clear visibility even from long distances.
• Dual Sensor Technology: Measures temperatures in two different areas simultaneously using the built-in sensor and 5-meter external probe.
• Wide Measurement Range: Built-in sensor measures from -40°C to +80°C, while the external sensor measures from -40°C to +125°C.
• Dual Unit Support: Displays measurements in both °C and °F for user convenience.
• Adjustable Limit Alarm: High and low temperature limits can be manually set, with alarms activated when limits are exceeded.
• Durable Construction: ABS housing with aluminum coating provides long-lasting durability and impact resistance.
• USB-C Power Input: Energy-efficient operation with a 5V 1A adapter.
• Easy Calibration: Sensor calibration can be quickly adjusted through the built-in software.

Technical Specifications

Symbols and Abbreviations

• 1Co → Alarm ON/OFF and °C/°F unit selection
• 2CH → High limit value for Sensor 1
• 3CL → Low limit value for Sensor 1
• 4HH → High limit value for Sensor 2
• 5HL → Low limit value for Sensor 2
• 1CE / 2HE → Calibration values for Sensor 1 and Sensor 2
• 3dF → Factory reset
• 4FE → System firmware/version number

Installation

• Setup:
  Remove the protective screen film.
  Connect the power adapter; the display will activate within 10 seconds.
  The built-in and external sensor readings will appear automatically.
• Setting Alarm Limits:
  Press and hold the Menu button to open the settings menu.
  Select the desired menu (for example, “2CH”); when it starts flashing, adjust the value using the arrow buttons.
  Press the Menu button again to save.
• Changing the Unit (°C / °F):
  Enter the “1Co” menu and press and hold the Up arrow button to switch the unit.
• Turning the Alarm ON/OFF:
  In the “1Co” menu, select the alarm mode and save using the Menu button.
• Calibration:
  Use the “1CE” or “2HE” menus to adjust the sensor value according to a reference measurement.