The measuring instrument provides the following specifications:

• Scattered light measuring principle
• Optional sample air heater for fog compensation
• Measuring ranges: 0..0.05 Em-1, 0.1 Em-1, 0..1 Em-1
• Resolution: 0.001 Em-1
• Integrated temperature sensor for localisation of the fire
• T90 response time: 5 s
• No moveable components
• Simple wall or ceiling mounting
• Ambient temperature –30..+55 °C
• Protection IP65
• Protected against aggressive atmosphere 
• Simple calibration check with checking rod
• Signal output via 2 digital coded relay contacts (alarm)
• Optional signal output via Profibus DP
• Programming via Profibus DP or handheld control unit
• Power supply 85..264 V / 47..440 Hz