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Voice + Bluetooth

Fig 1: Voice And Bluetooth Connector

Courtesy of KIA MOTORS AMERICA, INC.

Switch	Connector terminal	Resistance (±5%)	Output voltage
Voice	2-4	10.71 kΩ	3.5 V ± 0.22
Call off	2-4	18.91 kΩ	4.0 V ± 0.22
Call	2-4	40.91 kΩ	4.5 V ± 0.22