Dual UV / IR2 flame detector with copper-free aluminum 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: Copper free aluminum. Red color. Humidity range: 5 to 98% without condensation. Degree of protection: IP66. Vision cone 90º Horizontal + -45º from axis. Sensitivity from 60m (very high) to 15m (low).