This wire-free security camera is designed and engineered for quick and easy addition to your existing wire-free system. If you’re within the NVR Wi-Fi range, you’ll have the flexibility and freedom to install anywhere. It is recommended to place each camera at least 7 feet above the ground and angle it slightly downward toward the monitoring area, no more than 20 feet away. This wire-free security camera features advanced motion detection with a built-in passive infrared (PIR) sensor, to activate the cameras and start recording the moment that motion is detected. The PIR sensor detects only heat-emitting objects, such as people, animals and vehicles. It does not record motion from unwanted objects such as a tree blowing in the wind, which saves battery life and storage space. The bullet security camera also features a built in microphone and speaker, for two-way audio communication when using the HDVision mobile app. For nighttime surveillance or any low-light application, this IP camera features Smart IR technology, which: Reduces overexposure of the IR LEDs at the center of the image Increases illuminant efficiency up to 30% Produces LED light in rectangle form to better fit screen size Captures images up to 65′ in the dark without washing out the subject at closer ranges And with an IP66 weather-rated metal enclosure, this wire-free security camera has an operating temperature rating of -4° to 131°F and are protected from elements such as dust, sand and rain, making this kit an ideal outdoor security solution. Protection and Warranty: All HDVision purchases are protected by a 30-day money-back guarantee, unlimited US-based technical support, and our 1-Year Blanket Warranty that covers your entire purchase, with no asterisks and no exceptions! The warranty covers all camera and recorder hardware and components, and pre-installed hard drives. If you have an issue, we provide unlimited technical support – and manage all returns and exchanges directly, minimizing unnecessary downtime. Key Features and Capabilities: Megapixel Resolution – Cover more area and see more detail. Megapixel cameras can cover a larger area without compromising image quality, providing the level of detail needed for facial recognition and license plate identification. Smart IR Array – See clear, sharp images in the dark. Smart IR technology offers several advantages over standard IR, including: Produces clearer, brighter images in low light and at night Delivers a wider illumination spread Unique rectangular IR LED design produces a uniformly illuminated image across the entire screen Reduces overexposure at the center of the image and eliminates hot spots Eliminates blooming from lights by reducing ambient light pollution Reduces video noise for a clearer nighttime image, and reduces bandwidth consumption and video storage requirements Delivers 30% greater energy efficiency