Extech EN300 5-in-1 Environmental Meter: Anemometer, Hygrometer, Light Meter, Thermometer, Sound Level Meter

Measure air velocity up to 30 m/s (5900 ft/min) with ±3% accuracy, plus humidity, light, temperature, and sound level in one handheld meter. The EN300 combines five essential environmental measurement functions into a single instrument with a backlit dual LCD and vane-type anemometer.

Overview

The Extech EN300 is a versatile 5-in-1 environmental meter that measures air velocity, humidity, light, temperature, and sound level. It features a 5-digit dual LCD with backlight for clear readings in any lighting. Air velocity is measured with a vane sensor, light with a silicon photodiode, and sound with an electret condenser microphone. Data hold, min/max recording, and auto power off (with disable) enhance usability. Powered by a 9V battery.

What stands out

• 5-in-1 measurement: air velocity, humidity, light, temperature, sound level
• Wide air velocity range: 0.4 to 30 m/s (80 to 5900 ft/min)
• Sound level range: 30 to 130 dB with A/C weighting
• Light measurement up to 20,000 Lux (2,000 Fc)
• Backlit dual LCD display
• Data hold and min/max recording
• Auto power off with disable function

Technical details

• Air velocity: 0.4–30 m/s (80–5900 ft/min), ±3% of reading
• Humidity: 10–95% RH, ±5% RH
• Light: 0–20,000 Lux (0–2,000 Fc), ±5% + 10 digits
• Temperature: -10 to 50°C (14 to 122°F), ±1.2°C (±2.5°F)
• Sound level: 30–130 dB, ±1.5 dB, frequency range 30 Hz–4 kHz
• Display: 5-digit dual LCD with backlight
• Power: 9V battery
• Anemometer sensor: vane type
• Light sensor: silicon photodiode
• Sound sensor: electret condenser microphone

Our verdict

The Extech EN300 is a practical tool for HVAC technicians, facility managers, and environmental consultants who need multiple measurements in one device. Its accuracy and range make it suitable for professional use, while the backlit display and auto power off add convenience.