The LTD8416K-ST is a 16Ch 5 in 1 HD security DVR, supporting 5 different technologies HD-TVI, CVI, A-HD, Analoh And IP Cameras making the LTD8416K-ST the perfect high definition for implementation, with H.265+ video compression and 4Ch of audio inputs, This DVR supports up to 16 4K 8MP ultra HD cameras over coax and 2 additional IP cameras. clear and smooth video on mobile remote view and playback for both iOS and Android mobile devices.