multi-function meter: temperature, air velocity, relative humidity, light meter and sound level meter

The RH87 is a digital multifunctional environmental meter which combines the function of sound level, luminometer, relative humidity meter, temperature meter and anemometer.

SPECIFICATIONS
Power Requirements: 9V battery (included)
Low Battery Indication: Displayed
Display: 4? digit backlit LCD
Response Time: 2 updates/second (display only)
Operating Temperature: -10 to 60?C (14 to 140?F)
Storage Temperature: -10 to 50?C (14 to 122?F)
Weight: 430 g (15.3 oz)
Dimensions: 280 L x 89 W x 50 mm H (11 x 3.5 x 2")
Range Resolution Accuracy Temperature: -10 to 60?C (14 to 140?F) 0.1?C (0.1?F) ?-1.5?C (?2.7?F)
Relative Humidity: 20 to 80% RH 0.1% RH ?3% RH @ 750oF 80% RH 0.1% RH ?5% RH @ 75oF
Sound Level: 30 dB to 130 dB 0.1 dB ?1.5 dB
Light Level: 0 to 2000 Lux 1 Lux ?5% of Rdg plus 10, 2001 Lux to 20,000 Lux 10 Lux ?5% of Rdg plus 10, 20,001 Lux to 50,000 Lux 100 Lux ?5% of Rdg plus 10
Air Flow: 1.6 to 65.7 ft/s 0.1 ft/s ?3% of Rdg plus 10, 0.5 to 20 m/s 0.1 m/s ?3% of Rdg plus 10, 0.9 to 38.9 knots 0.1 knots ?3% of Rdg plus 10, 1.8 to 72 km/h 0.1 km/h ?3% of Rdg plus 10
Air Volume: 0 to 999,900 CFM 0.1 to 100 CFM ?3% of Rdg plus 10 0 to 999,900 CMM 0.1 to 1000 CMM ?3% of Rdg plus 10