TT-7MSO32C	Color 1/3 SONY SUPER HAD CCD DSP, 420TVL, 0.5 Lux
TT-7MSO42C	Color 1/4 SONY SUPER HAD CCD DSP, 420TVL, 0.5 Lux
TT-7MSH32C	Color 1/3 SHARP CCD, 420TVL, 0.5 Lux
TT-7MSH42C	Color 1/4 SHARP CCD, 420TVL, 0.5 Lux
TT-7MLG32BW	BW 1/3 LG CCD, 420 TVL, 0.5 Lux   (US$3 required for audio function)