APX 4000
APX 4000: EMERGENCY Operation
Declaring an Emergency – Trunked 
Operation
• Instantaneous Transmit
• “HOT MIC”:  When activated, your microphone will 
automatically open for 10 Seconds. LCD screen will 
feature Emergency operation indicators in orange 
• Emergency Button must be depressed  to activate 
an emergency    
• Identify yourself and state your emergency 
• You will be immediately heard at the Dispatch Center
Zone Ba tt Nuis