Power Saving Function; Headphone Function; Programme - Retevis RB628 Bedienungsanleitung

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1) Press and hold the 【◎ 】key until the icon (

) appears to enter the

keyboard lock state.

2) Long press and hold the 【◎ 】key until the icon (

) disappears to exit the

keyboard lock state.

Note: When the keyboard is locked, except for pressing the [PTT] and [Power

Switch/Scan] keys, any key press will sound a key failure tone.

Power saving function

The radio has a unique function to extend the service life of the battery. If there is

no call or voice reception within 10 seconds, the walkie-talkie will automatically

enter the power saving mode. In this mode, the radio can still receive information.

1) Connect the earphone to the walkie-talkie (radio A&B).

2) Press the PTT button of the headset of the radio A to send a voice to the MIC

of the headset, and the radio B should be able to receive normally. Repeat the

same operation on radio B.

The programming software can quickly change and expand the function.

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