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Measuring ranges
Humidity: 0 ... 100% relative humidity (rh)
Temperature: -30 ... 100°C / -22 ... 212°F
Dew point temperature: -30 ... 100°C / -22 ... 212°F
Wet-bulb temperature: 0 ... 80°C / 32 ... 176°F
General specifications
Accuracy: ± 2% rh at 25°C / 77°F and 20 ... 80% rh, otherwise ± 2.5% ± 0.5°C / ± 0.9°F (at 25°C / 77°F), otherwise ± 0.8°C / ± 1.5°F
Resolution: 0.01% rh, 0.01°C / 0.018°F
Response time (% rh): Approx. 10 sec. (90% at ambient temperature of 25°C/77°F)
Sampling rate: 2.5 times per sec.
Display: 4.5-digit dual LCD with backlight
Energy efficiency: Automatic power off after 15 min. inactivity (To deactivate, turn device off. Press and hold Hold key and On/Off key at same time. When display comes on, release both keys.)
Storage conditions: -10 … 60°C / 14 … 140°F, ˂ 80% rh, noncondensing
Operating conditions: 0 … 40°C / 32 … 104°F, ˂ 80% rh, noncondensing
Power supply: 1 x standard 9V battery, NEDA1604 or 6F22
Approx. dimensions: 225 x 45 x 34 mm / 8.9 x 1.8 x 1.3 in
Approx. weight: 200 g / < 1 lb
Delivery Scope
1 x PCE-555 air humidity meter
1 x Carrying case
1 x Battery
1 x User manual
