3IR flame detector with frequency analysis of flame flickering to avoid false alarms, suitable for liquid hydrocarbons and dirty fires. Especially suitable for fires with smoke. Resistant against influences of lights, arcs and electric shocks, electric welding (more than 3 meters). Requires 24V power. Reach 35 m with an angle of +/- 90 H-V. Housing: Fiberglass reinforced polyester (GRP). Not flammable UV resistant, Self-extinguishing V – 0 (UL-94). Dimensions A: 125 mm H: 80 mm F: 57 mm. IP protection: IP65.