The factory chime test result in <doorbellDingdingtest>.
optional
freq: number
Frequency; test codes 0 and 8. The unit is not established.
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curFreq: number
Current frequency; test code 8.
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sub1gTestResult: number
Sub-1 GHz radio test result; test codes 7 and 8.
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update: DoorbellDingdingtestUpdate[]
Chime firmware updates; test code 5, up to 10.
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dingdongTestResult: DoorbellDingdingtestResult[]
Chime test results; test codes 11 and 12, up to 10.