Swann's True Detect PIR Thermal Sensing technology detects motion by heat, such as from people & cars, to trigger recording and push notifications. This virtually eliminates false triggers, like plants moving with the wind, to only capture events with security relevance. This 5MP Super HD security camera is the perfect addition to your Swann NVR-8580 to cover blind spots. The sturdy aluminium construction is built tough for the outdoors or indoors with IP66 weatherproof rating. The camera comes with a roll of 18-metre Ethernet cable for connecting the camera to the NVR. See in the dark up to 40 meters with the camera's powerful infrared night vision. The built-in microphone adds audio recording for that extra layer of valuable evidence to your surveillance system. The camera's bullet shape makes it more visible for potential intruders, working as a deterrent to protect your property & loved ones. For a more discreetly shaped camera that blends into its surroundings, you may also consider its round shape sister, the NHD-866MSD dome camera.