The circuit design mainly includes interface designs, such as address coding circuit, human-machine, AD converter, etc.
电路设计主要包括译码电路设计，人机接口电路设计，AD转换电路设计等。
Coding circuit inside (may not code), can be connected in alarm bus directly when coded and matched with module when not coded.
内有编码电路(可不编址)，编码时可直接接入报警总线，不编码时需配控制模块才能使用。
Coding circuit inside (may not code), can be connected in alarm bus directly when coded and matched with module when not coded.
内有编码电路(可不编址)，编码时可直接接入报警总线，不编码时需配控制模块才能使用。
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