SRD-870DCSRD-870DC is a high performance 8 channel recording solution with embedded Linux and H.264 codec technology. This DVR records up to 240/200 (NTSC/PAL) fps at 4-CIF resolution. The SRD-870DC comes equipped with up the coax support feature and multiple RS-485 protocol support. SpecificationsSRD-870DC-Specifications.pdfA & E SpecsSRD-870D_AE.zipDatasheetSRD-870DC_Datasheet.pdfManualSRD-16XXDC,8XXDC_UM_ENG1007.pdf