Call For Pricing - 800 Ì_åä å« 685 Ì_åä å« 5267 Medium Intensity White Strobe Obstruction Lighting - FTB 305 - Flash Tech Application: The Flash Technology FTB 305 is white strobe for day and night for structures under 500Ì_åä Ì. Uses a seperate controller - FTC 121 or FTC 140. Medium Intensity White Strobe Obstruction Lighting - FTB 305 - Flash Tech Part number - Flashtech-FTB-305