The MARS-250 is an economical external alarm siren with 120db waterproof standalone self-contained LED Flash light. It is made of Polycarbonate which provides high mechanical strength and protection against UV radiation. It has easy wall mounting for outdoor and indoor installation. Its interior is protected by metal galvanized steel 0.8 mm thick.

It has:

• 2 Extra Bright 20,000 mcd High Power FLASHING LED for immediate flashing as soon as it is powered
• 9 Extra Bright ALARM 20,000 mcd high power LED as a visual indication when activating the 2.5 W power siren, giving it 30% more autonomy than incandescent bulbs.
  
• Extra Bright 20,000 mcd High Power LEDs Provide Excellent Visual Indication Even With High Sunlight
  
• The red plastic surface of the optical display is a crystalline multiple diffraction type to increase the brightness of the display in strong sunlight.
  
• OTB (Over The Board, not SMD) technology in its transistor for longer durability
  
• Powerful 120db buzzer
  
• Dual protection Micro Switch type tamper to protect against vandalism and detachment
  
• Activate ALARM positive or negative type
  
• SAB / SCD function
  
• Ability to use ALARM LEDs for standalone PL display.
  

Works with 12Volt / 1.3 Ah, 2.3 Ah and 7 Ah battery (NOT available at siren price) and 13.5 Volt voltage