HWK-1A non switchboard indoor telephone commutator connect YX-1 (2) indoor loud box.
HWK - 1a型无主机室内电话扩音转接器配接YX - 1(2)型室内音箱。
Download new upgrade client from support area and try upgrading your HWK module with it.
在线升级程序版本过期，请下载最新的在线升级程序，重新升级。
Download new upgrade client from support area and try upgrading your HWK module with it.
在线升级程序版本过期，请下载最新的在线升级程序，重新升级。
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