Feature 
   ☆ Sandwich structure
   ☆ Loop powered
   ☆ 16 programmable tones
   ☆ Three working modes
   ☆ Electronically addressed
   ☆ Suitable for DI series intelligent detectors
   ☆ LPCB Approved
Technical Specifications   
  ☆ Operating Voltage: 24VDC
  ☆ Operating Current:
           Standby Current: 1mA
           Action Current: 6mA
  ☆ Alarm tones: 16 tones, Tone 14 and Tone 16 are EN54-3 compliant
  ☆ Operating Environment:
           Temperature -10℃ ～+50℃
           Relative Humidity: 95%, non condensing
  ☆ Dimension: Diameter 152.4mm, Height 43mm