EN300 : 5-in-1 enviromental meter: Air humidity,temperature, air speed, sound level ( Extech/Flir/Teledyne)

• Air Velocity:
  1.4 ...108km/h ( resolution:0.1km/h; Accuracy: ±3% full scale)
  0.8 ...58.3 knots ( resolution:0.1knots; accuracy: ±3% full scale)
  0.4 ...30m/s(resolution: 0,1m/s; accuracy: ±3% full scale)
  0.9 ...67MPH ( resolution: 0.1MPH, accuracy: ±3% full scale

• Light (Lux): 0 ...20000Lux ( resolution: 1 Lux/10 Lux; accuracy: ±(5% of reading + 8 digits)

• Relative Humidity: 10 ...95%( resolution:0.10% , accuracy:±4% )

• Temperature (Air): 0 ...50°C(resolution:0.1°C , accuracy:±1.2°C )
  Temperature (Type K):-100 ...1300°C (resolution:0.1°;  accuracy: ±(1% of reading + 2°F/1°C)

• Sound level: 1/2" electret condenser microphone
   Frequency: 31,5...to 8,000Hz
   Response Time: Fast
   Sound Range (dB): 35...130dB(resolution: 0.1dB, accuracy:±1.4dB )
   Weighting: A
   Accuracy: meets IEC61672 class2

• Dimensions: 248 × 70 × 34mm); Vane: 31mm
• Power: 6 × AAA (1.5V) batteries
• Weight: 335g