Translations:KAVAN V20 + ETHOS™ - User manual/958/en
RTC voltage
Displays the RTC (Real Time Clock) battery voltage in the transmitter. For a new battery, the voltage is 3.0 V, if the voltage is less than 2.7 V, replace the battery inside the radio to ensure proper clock operation. If the voltage drops below 2.5 V, an alert will be displayed, see section Alerts / RTC Battery Check.