Retevis RT665 Manual Del Usuario página 7

if you need to receive signals that are weak.
Long press 【Channel+】 key for two seconds to enter into the
monitor mode,release it to exit.
● Emergency Alarm
The purpose of the TOT is to prevent any single person from
using a channel for an extended period of time. An alarm will
sound if the transmission continues beyond the set time. The
transceiver will stop transmission if this occurs. To stop the
alarm, release the PTT switch and the transceiver will return to
standby.
● VOX
This function can be voice activated so the user doesn't have to
press the PTT key. Switch to Channel 7, turn 0ff the transceiver,
then press the FUNCTION KEY and【Channel+】key and turn
on the transceiver at the same time.
● Battery Power Saving
If there is no signal or operation, the radio will reduce its power
consumption. The battery power-saving function activates when
the channel is unoccupied or has not been in operation.
● Scrambling
It is a voice encryption mode which is different from sub audio.
● Low Battery Warning
If the battery power falls to the predetermined value during
transmission, the transceiver will give out a voice prompt, please
charge in time.
● Busy Channel Lockout
The function can prevent interference from other transceivers
using the same channel.
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