Battery Installation; Low Battery Warning; Use The Charger To Charge; Turn On/Off The Radio - Retevis RB628B Bedienungsanleitung

Battery installation

1) Battery: Li-ion battery.
2) Press the battery upwards to remove the battery.
3) Put the battery into the battery slot, pay attention to install the battery strictly
according to the positive + negative-instructions in the slot, and press down
firmly.
4) Reinstall the battery.

Low battery warning

When the battery power is low, indicator flash Red and is accompanied by a low
battery reminder (once 30 seconds). When the battery power is low, the intercom
will be shut down.
Note: When storing the radio for a long time, please remove the battery first.
Long-term corrosion of the battery will cause damage to the radio.

Use the charger to charge

1) Make sure the radio is closed.
2) Insert the Type-c charging plug into the jack of the radio with the rechargeable
battery, and plug the other end of the charger into the power socket on the wall.
3) When the battery is fully charged, indicator will be turn to green from blue，
Advise to keep the radio closed when it's charging, if you try to perform an
intercom operation during charging, some abnormal phenomena may occur
when the battery is almost empty.

Turn on/off the radio

Press the button to turn on or off the radio. When turn on the radio, the horn of
radio sounds a boot prompt.
After the power-on done, the radio is in the walkie-talkie mode by default.

Volume setting

1) In the standby or receiving state, press the ˂ or ˃ key.
2) Then press ˂ or ˃ to increase or decrease the volume of the radio. 0,1-9 level
the volume can be adjusted.
3) Press the key to decrease the volume to level 0, the speaker sound will be
turned off.
Note: When the volume is not adjusted to a proper state, Don't put the speaker of
the walkie-talkie too close to your ears to avoid damage to your ears due to too
much sound.

Transmit and receive

1) Press and hold the [PTT] key, keep a distance of 3 to 5 cm from the micro-
phone, and talk at a normal speaking rate. In order to avoid cutting off your call,
please press the [PTT] button to pause for a while, and then start speaking.
2) When you finish the call, please release the [PTT] key. You can receive the
signal.
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