User's Manual

Maintenance Manual
UDM-240ZH/ZBH
11
4 HOW TO USE
4-1 Power ON/OFF
 Press the “power” button for more than 2 seconds then the UDM-240ZH is turned ON.
 The device will not be turned on while charging.
 Power can be on after 3 seconds if the device is separated from the cradle.
 When the device is on, if you place it into the charging cradle, it is possible to use
on and on.
4-2 HOW TO CHARGE
The built-in Li-ion battery is safe and reliable to guarantee high-performance.
Batteries MUST be fully charged before use.
Charging cradle Terminal Charging
Battery charging time
Low battery voltage will shorten the talk range and will make the performance of radio
worse.
When Battery Charging is needed;
- After using the battery 4 ~5 hours the performance is seemed to be reduced.