The Fireye Flame Amplifier Modules are used in conjunction with the appropriate flame scanner to provide flame scanning capability in the Flame-Monitor system. Fireye offers ultraviolet amplifiers (EUV1), self-check ultraviolet amplifiers (EUVS4), flame rectification amplifiers for use with flame rods and photocells (ERT1), and auto-check infrared amplifiers: E1R1 (standard model), E1R2 (high sensitivity model), and E1R3 (for solid fuels).