In package: 2 pcs The price for package ; Standard: AHD - 8 Mpx, HD-CVI - 8 Mpx 4K UHD, HD-TVI - 8 Mpx 4K UHD, CVBS - PAL, NTSC ; Audio transmission range: 1200 m ; Device type: Passive ; Number of channels: 1 Video, 1 AUDIO, 1 DC ;