Spectral energy distribution for an sdB+MS binary with 90% light contribution of the sdB in the Gaia-G band in the top panel, and with 20% contribution in the bottom panel. The binary SED is plotted in black while the contributions of the sdB and MS component are shown respectively in blue and green. In black-dotted line, the transmission curves for the Gaia-G, 2MASS-J and 2MASS-Ks filter are shown from left to right.