scandinavian micro systems SCAN REPEATER: Heading Repeater Model: SR01-02 

• Versorgungsspannung: 24V DC
• Continuous Brightness Adjust (adjusts all the way to “0”)
• Addition of Rate of Turn Display (ROT)  (shows 00-to-99 deg. per min. ROT)
• Improved Analog Turning Indicator™ (New design with smoother turning motion) 
• Input NMEA 0183 
  
• S/N: 10102-0606