Dual UV / IR2 flame detector with 316 stainless steel housing, immune to arc welding and various applications with sensitivity of: Ultraviolet: 185 - 260nm Visible: 400 - 700nm; Near infrared: 0.7 - 1.1 m. Broadband infrared: 1.1 - 3.5 m. Requires 24V power. Housing: 316 stainless steel. Color: Red. Humidity range: 5 to 98% without condensation. Degree of protection: IP66. Cone of vision: 90º Horizontal + -45º from axis. Sensitivity: from 60m (very high) to 15m (low).