Double infrared and ultraviolet flame detector with infrared operating band from 1 to 2.7 micron/meter and ultraviolet operating band from 185 to 260 nm. Maximum immunity to light interferences, smoke, vapours or dusts, programmable response time and sensibility, Self test diagnostic function, low current draw, alarm and fault relay output or 4/20mA signal. Power supply 14…28 VDC, maximum draw 28mA, operating temperature -10 + 55°C, relative humidity 95% without condensation, protection class IP65. Approved: SIL2 ed EN 54-10.FF756 UV/Dual IR Flame Detector