# Normal Environmental Conditions

This product is designed to be safe under the following conditions:

- Indoor use

- Altitude up to 2 000 m

- Operating temperature +5 °C / +41 °F to +40 °C / +104 °F

- Storage temperature -25 °C / -13 °F to +60 °C / +140 °F

- Maximum relative humidity 80 % for temperatures up to 31 °C / 89 °F decreasing linearly to 50 % relative humidity at 40 °C / 104 °F

- Mains supply voltage fluctuations up to ±10 % of the nominal voltage

- Transient overvoltages up to the levels of overvoltage category II

- Temporary overvoltages occurring on the mains supply

- Pollution degree 2

- Ingress protection rating: IP20