Indoor should be no flammable gas and conductive dust. Forbid to install in an ammonia leak prohibited or danger of explosion hazardous areas.Precautions: Do not use the product near high-precision electronic equipment, radio wave interference may cause malfunction of precision electronic equipment and other problems. Do not modify or disassemble the product, otherwise it will cause damage and circuit failure of the product. Qualified dedicated grounding wire, secure and reliable grounding line capacity is used to meet the requirements to ensure the elimination of fire hazards. Temperature Range: -10 Degree C~ -33 Degree C

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