Icon MeaningOut of range.Indicates the number of the submonitor being used.Indicates that the doorphone’sringtone volume is muted.Indicates that the camera’s ringtonevolume is muted.Indicates which doorphone iscalling, monitoring, or on a call.("1" indicates the device number.)Indicates which camera is calling,monitoring, or on a call.("1" indicates the device number.)Indicates there is a call from thedoorphone when calling,monitoring, or on a call with anotherdevice. (® page 32)Indicates there is a call from acamera when calling, monitoring, oron a call with another device. (®page 32)Indicates that "Press-to-talk" modeis on. (® page 17)Indicates that images are beingrecorded. (® page 20)Indicates that the doorphone’s LEDlights are "On". (® page 34)Soft key iconsIcon ActionDisplays menus.Executes the selected item oroperation.Returns to the previous screen.Unlocks the electric lock. (®page 29)Changes the display to zoomdisplay. (® page 33)Changes the display to wide display.(® page 33)3.4 Battery installation– USE ONLY rechargeable Ni-MH batteries AAA (R03)size.– Do NOT use Alkaline/Manganese/Ni-Cd batteries.– Confirm correct polarities ( , ).Note:R Use the supplied rechargeable batteries (Ni-MHONLY). For replacement, we recommend using thePanasonic rechargeable batteries noted on page 4.R Wipe the ends of batteries ( , ) with a dry cloth.R Avoid touching the ends of batteries ( , ) or theunit contacts.3.5 Charging the sub monitorOnly connect the charger with the supplied PanasonicAC adaptor (® page 3).AC adaptor connectionsA*1B*1 Press plug firmly.R Connect the charger to the power outlet, and thenplace the sub monitor in the charger to charge it.Charging usually takes about 8 hours.A Charge indicator– when charging: lights– when charging is completed: offB HookR Charging may take longer in the following situations.– When the operating temperature is low. (®page 43)– When the sub monitor is picked up off the chargeror used during charging.– When the sub monitor’s signal is out of range( ). (® page 14)R The sub monitor does not overcharge even if it iscontinuously placed in the charger.143. Preparation