Fireye's UV7 series is composed of discrete flame scanners that are compatible with MB (Multi-Burner) series controls, SB (Single-Burner) series controls, and the flame sensing modules, MBPF-100S and MB-600PF. The UV7A4 functions as a high-sensitivity non self-checking ultraviolet scanner for monitoring gas or oil flames which cycle on and off frequently. The UV7R4 is a 90° right angle non self-checking ultraviolet flame scanner also used for monitoring gas or oil flames which cycle on and off frequently. The self-checking ultraviolet flame scanner, Fireye's UV7SC, is perfect for monitoring continuous gas or oil flames.