Feature y Function:
-Full-duplex two way talk
-2-wires non-polarity connection
-Ding-ding-dong melody ringsound
-Directly drive electric lock ( 12VDC)
-Working voltage: 120VAC 60Hz
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Feature y Function:
-Full-duplex two way talk
-2-wires non-polarity connection
-Ding-ding-dong melody ringsound
-Directly drive electric lock ( 12VDC)
-Working voltage: 120VAC 60Hz
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