【Only Compatible with ZOSI 3K Lite DVR(ZR08VN,ZR08MN) 】This wired camera is Only compatible with ZOSI 3K Lite DVR(ZR08VN,ZR08MN). Since ZOSI DVR support only up to 4pcs audio camera, you only can add up to 4pcs audio camera on the ZOSI DVR. If you have any product compatibility issues, please contact us first. | 【2MP HD Bullet Camera with Audio】The camera has a built-in microphone, no speaker, and supports one-way audio only. You can hear the other party speaking, but can't have a two-way conversation. 1080P high resolution provides clear images day and night. | 【Night Vision】Built-in 36pcs IR LEDs, with the camera's automatic IR-CUT filter, clear images can be obtained both day and night. Up to 100ft night vision in total darkness and 120ft Night vision in ambient light. It provide color video during the day and black-and-white video at night. | 【IP66 Weatherproof, Indoor/Outdoor Use】Aluminum metal vandal proof & waterproof can withstand the toughest of outdoor conditions , adjustable 3-axis camera stand, cable through bracket for hassle free use in rainy or snowy days. | 【Not Include CCTV Cable and Power Supply】This is a wired camera that requires connection to CCTV cable and power supply (not included). And this camera could not work independently, it need to be connected to the ZOSI DVR to work(ZR08VN,ZR08MN). If you have any product problems, please contact us anytime.