Main Features:IP PoE - the best type of CCTV system, uses one RJ45 cable (included) per camera for easy installAutomatic night vision up to 30mAudio mic built in to camera for easy, clear audio recordingsEasy to mount camerasFree app to remotely view live CCTV2.8mm lens - this gives a very wide pictureWhat is included:• 1x Ertech 4CH PoE NVR• 4x Ertech 1080p IP PoE indoor/outdoor turret cameras• Optional HDD up to 10TB• Optional cables - 20m in black or white (indoor only)HDD Guide1TB approximately 2 weeks recording / 2TB approximately 4 weeks recording4TB approximately 8 weeks recording / 8TB approximately 16 weeks recording10TB approximately 20 weeks recordingAfter Sales SupportWe have a dedicated team to help with any unexpected problems you might have.