![](https://gqt.gr/1496/senzax-std-cqr-siren.jpg)
• EN50131-4 Grade 2 and Grade 3 options
• Backlit option - ‘Dusk to dawn or ON’ backlit model only
• Comfort LEDs
• Lithium smart battery charging
• SAB/SCB option
• Confirmed alarm input - Audible and LED strobe - optional plus models
• Self test input plus models
• Fault relay output plus models
• Trigger polarity -/+
• Tamper polarity -/+ plus models
• Trigger wire monitoring plus models
• Adjustable siren timer 3min / 15min / intermittent depending on model
• Adjustable siren volume Hi/Lo
EN50131-4 Grade 2 and Grade 3 options