Measuring function
- Temperature: -30 ... 65°C / -22 ... 149°F (Internal)
                          -40 ... 125°C / -40 ... 257°F (external)
- Humidity: 0 ... 100% RH (Internal & External)
- Memory for 25,920 readings
- Saves as PDF

With the relative humidity meter it is possible to determine the humidity, ambient, wet bulb and dew point temperature. Measurements up to 60 °C are possible with the relative humidity meter. The relative humidity meter can therefore be used universally because of its various measuring functions to determine the ambient conditions.

Measuring ranges:
- Humidity: 0 ... 100% RH
- Ambient temperature: -20 ... 60 °C / -4 ... 140 °F
- Wet bulb temperature: 0 ... 60 °C / 32 ... 140 °F
- Dew point temperature: -20 ... 60 °C / -4 ... 140 °F
- Interface: Bluetooth
- MIN / MAX / HOLD function

PCE-555 is a combination digital hygrometer and digital thermometer used to measure relative humidity or air humidity as well as air temperature, dew point temperature and wet-bulb temperature. This portable, handheld meter allows for quick and easy detection of environmental conditions. Applications include monitoring climates of refrigerated trucks, warehouses, construction sites and HVAC installations, where excess moisture, condensation and uneven temperatures can create mold, spoilage and health hazards.

- Humidity measuring range: 0 ... 100 % relative humidity (rh)
- Temperature measuring range: -30 ... 100°C / -22 ... 212°F
- Resolution: 0.01 % rh / 0.01°C or 0.018°F