Specifies a hardware scan code for the key.
指定键的硬件扫描码。
433MHz wireless transmission, scan code configuration, camera linkage shooting alarm push to the phone.
扫码配置，摄像机联动拍摄报警推送至手机。
433MHz wireless transmission, scan code configuration, camera linkage shooting alarm push to the phone.
扫码配置，摄像机联动拍摄报警推送至手机。
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