采用一体式设计，方便现场安装和维修，并简化了现场布线。
The use of integrated design, convenient installation and maintenance of the site, and simplifies the field wiring.
坚固的建筑是双重密封，以防止水和灰尘进入即使在现场布线。
The rugged construction is double-sealed to prevent water and dust ingress even during site wiring.
坚固地建筑是双重密封，以防止水与灰尘进入即使在现场布线。
The rugged construction is double-sealed to prevent water and dust ingress even during site wiring.
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