Low Battery Warning; Attaching A Headset; Technical Data - Motorola ME4251 series User Manual

LOW BATTERY WARNING

If the handset batteries are low and need charging you will hear a beep every 30
seconds and the icon will be displayed.

Attaching a Headset

Note: A headset is not included as standard.
You can connect a headset to your handset.
Lift the small rubber flap on the right side of the handset to reveal the
headset socket. Connect the jack plug into the jack socket.
With a headset connected the handset microphone and receiver
loudspeaker are switched off and all communication is via the headset
earpiece and mouthpiece.

Technical data

Receiver impedance :
Microphone impedance :
Receiver output power :
Plug :
Microphone sensitivity :
150 ohm
2.2K ohm
20mW
2.5mm headset jack plug
-42dBV/pa
11