LED blinking light/sounder combination

• Very economical visual and acoustic alarm
• Certified for use in Ex-Zones 0, 1 and 2
• Compact design with a diameter of just 88 mm
• Alarm operated via certified zener barriers or galvanic isolators
• 49 loud tones at 102 dB(A); super bright LEDs in red, green, blue
  and yellow/amber for all applications
• Very well suited for fire alarm systems and direct control due to low
  power consumption
• Self-synchronising sounder for clear tone perception
• 2 different externally controllable tones
• Volume control
• Signals can operate separately

Here you can find suitable zener barriers