RS485 The interface only supports two-wire system, not four-wire system.

• A.True
• B.False

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Through the query ____________, the user can understand the operation of the device.

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When the load is 60KW, Each ups The capacity is 100KVA, Power Factor 0.95, Then when the system must be redundantly configured, at least ____________ tower ups.

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The following ____________ air supply methods mainly use process air conditioners that have a large amount of waste heat to be taken away from the lower working area.

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Use POE When interface, it has two functions of communication and power supply.

• A.True
• B.False

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