Produk ini bergaransi 6 bulan Devicewell hds7306 6 channels video switcher of 4sdi and 2hdmi inputs with sd card recording function, chroma and luma, its a professional loaded with ptz cameras controlling (6). a 6-channel sdi/hdmi multi-format streaming switcher feature: *it support 4sdi and 2hdmi input *it support 2-way sdi and 1-way hdmi pgm *it support multi screen output: 1hdmi and 1sdi *it support 1sdi output for custom pgm/pvw *it support usb 3.0 streaming *it support joystick camera control *it has chroma and luma key * hundreds of special effect wipes such as circle, rhombus, fan, plum blossom, shutter etc. * separate pattern key. it can set various patterns such as position, size, and number of images can be adjusted.