Delta OHM HD 9221 Manuel D'instruction page 33

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MAINTENANCE
Storage conditions:
- Temperature: -20 to +60°C.
- Humidity: less than 85% relative humidity.
- Do not store the instrument in places where:
1) there is a high degree of humidity;
2) the instrument is exposed to direct sunlight;
3) the instrument is exposed to a source of high temperature;
4) there are strong vibrations;
5) there is steam, salt and/or corrosive gas.
The instrument body is made of plastic so it must not be cleaned with
detergents which can spoil plastic.
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ENGLISH