Attribute    Value
Brand    DETECTOMAT
Model    DL-520-2O
Product Type    Addressable Optical Smoke Detector
Detection Technology    Dual Optical Smoke Sensors
System Compatibility    DETECTOMAT D-Loop
Isolator    Integrated Bidirectional Short-Circuit Isolator
Addressing    Automatic or Manual
Supply Voltage    30–41 V DC (2-wire D-Loop, nominal 40 V DC)
Quiescent Current    180 µA
Alarm Current    5 mA
Optional Output    Relay, 0.4 A / <30 V DC
Sensitivity    Adjustable, 4 levels
LED Indication    Multicolor (Alarm, Fault, Status)
Operating Temperature    -10°C to +65°C
Humidity    Up to 93% RH (non-condensing)
Protection Rating    IP20B
Housing Material    ABS
Housing Color    White (RAL 9003 equivalent)
Dimensions    62.6 × 104 mm
Weight    150 g (including base)
Standards    EN 54-7, EN 54-17, EN 54-18