bids are invited for nvr 4 port - higher resolution for superior image quality, plug n play hd camera, supports all popular hd format like hdcvi, hdtvi, ahd and cvbs, no latency, real time preview, osd menu support for customized settings, crystal ir leds for clearer night vision , ip cam - higher resolution for superior image quality, instastream provides up to 70percentage more saving in bandwith and stronge costs than h.265, smart ir for even infrared illumination, onvif conformance, poe support for power and data transfer over ethernet cable , online device upgrade, android and ios smart phone mobile app, web view and cms support for remote surveillance , nvr - supports multibrand ip cameras through onvif protocol, multi-stream auto switching, front end video analytics support, network failure data redundancy thorugh anr, cloud health monitoring system hms support, online device upgrade, android and ios smart phone mobile app, web service and cms support for remote surveillance , dvr - universal compatibility with all popular analog hd formats, ip cameras and cvbs, instastream provides up to 70 percentage more saving in bandwith and storage costs than h.265, supports additional ip camera channels, long transmission distance over coax cable video, audio and control signals, video analytics supported, cloud health monitoring system hms support, online device upgrade, webview cms and smart phone support android and ios , screw driver - screw driver set total quantity : 14