Selective Calling Versatile intercom system, either single-master-master selective. All-master, or Intermixed system can be set up. - Full trunkage, semi-private a station can join an existing communication - Max. 2 door stations pe r system, Door release activation - Zone page with or without talkback. - Accepts background music - Include s hardware - Requires a 12 Volt D.C. 70mA power supply per station (not inc.) - Distance: 650M w/0.65mm dia.cable - Size: 100 x 210 x 73 mm (WHD) - No of CALL: 24-CALL 
