Features:

• Zone selection button: User could choose any zone from one to six, and also all zone
• Call button and Warning Tone button: Press call button when the warning tone button is on,the ring come out firstly
• Number of rings selection: 2 sounds or 4 sounds
• 24V DC power supply
• RS485 online port, can be cascaded to 6 pieces
• MIC/ Chime/ Main volume adjustment
• The Panel is shown with 10 volume levels
• Microphone support preemptive and queuing function when online use
• 170x142x54mm
• 920 g