The Extech EN300 is a rugged and versatile 5-in-1 environmental meter designed to provide comprehensive measurements of humidity, temperature, air velocity, light, and sound. With its tripod mount and RS-232 PC interface, this powerful device offers both convenience and functionality for various applications.

Featuring a large dual LCD display, the EN300 allows you to simultaneously view temperature and air velocity or relative humidity, providing you with real-time information at a glance. The characters on the display intelligently reverse direction depending on whether you're in Hygro-Thermo-Anemometer or Light-Sound Mode, ensuring clear and easy-to-read readings.

Equipped with essential features, the EN300 enhances your measurement experience. The Data Hold function allows you to freeze the displayed values, ensuring accurate and convenient recording. The Min/Max feature captures the highest and lowest readings over a period of time, giving you valuable insights into environmental conditions. The Auto power-off function conserves battery life, while the Low Battery/Overrange indication ensures uninterrupted usage.

The EN300 is designed to deliver precise and reliable measurements across different parameters. Its built-in low friction vane wheel enhances air velocity accuracy, providing readings in feet per minute (ft/min), miles per hour (MPH), meters per second (m/s), kilometers per hour (km/h), and knots. The device incorporates a precision thin-film capacitance humidity sensor, ensuring fast response times for humidity measurements. Additionally, the built-in thermistor enables ambient temperature measurements, offering comprehensive environmental data in one device.

With its Type K input, the EN300 can measure temperatures up to an impressive 2372°F (1300°C), making it suitable for a wide range of temperature monitoring needs. The device also utilizes a precision photo diode and correction filter for cosine and color-corrected light measurements, enabling accurate assessment of lighting conditions. Moreover, its sound level measurement adheres to the IEC 61672 class 2 standard, employing A frequency weighting and fast response time for reliable sound assessments.