9
Powering On/Off (On-Off/End/Home Key or Rotary 
Knob Push Button)
To power on: 
• Press and hold  or the On push button
• If the MTM800E is configured with ignition sense, the radio 
will automatically turn on whenever the vehicle ignition is 
turned on.
• If an Emergency Foot Switch is connected to the 
accessory connector and “Emergency with wake up” is 
enabled by your Service Provider, the MTM800E 
automatically turns on in Emergency Mode whenever the 
Emergency Switch is pressed (see Emergency in TMO” on 
page 71. and Emergency in DMO” on page 78.).
Your MTM800E performs a self-check and registration 
routine. After successful registration, the MTM800E is in 
service.
To power off: 
• Press and hold . 
• If the radio is powered on via the ignition, it can be turned 
off via the ignition or press and hold .
You will see the Powering Off message. 
Powering On (Emergency Button)
Press and hold the Emergency button to power On. 
The MTM800E will power On in Emergency Operation or in 
standard mode (as programmed).
Powering On with Transmit Inhibit (TXI) Active
Transmit Inhibit is a feature allowing you to switch off 
transmission before entering a Radio-Frequency (RF) 
sensitive area. 
The terminal powers On and Off without visible and audible 
notification if Covert Mode is activated. (Refer to Covert Mode” 
on page 31..)