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④"
PTT key
Press and hold the PTT transmitter button, and then speak in normal voice. Release
the PTT button to receive the signal.
⑤ P2 key (Custom functions can be set in the APP- a list of options is located in Appendix B)
⑥ P3 key. (Custom functions can be set via the APP- a list of options is located in Appendix B)
⑦ Keypad Function Keys
Refer to the detailed explanation below for detailed key functions.
⑧ Headphone jack
Dedicated headphones can be connected. Please note this is not an M plug,
it is a special customized earphone. Contact BTech to purchase it.