• Amplifier: Monaural (for system functions only)
• CAT-5e Connection: 110 punch-down block
• Mounting Method: Surface
• Display: 5-charactor backlit LCD panel
• Keypad Backlight: nstaller-selectable amber or green with red indication
• Keypad Style: Single-gang Decora
• Min Load Impedance: 8 ohms per channelSpeaker Connection(s)2 removable 4-pole screw terminals
• Speaker Connection(s): 2 removable 4-pole screw terminals
• Speaker Relay: 4-pole double-throw
• Speaker Wire Size: Up to 14 AWG
• User Controls:
  Talk key, next and previous keys,
  DND selection/indication key,
  volume up and down keys

         Datasheet: PDF