Audio input is available for some models of HDCVI cameras. HDCVI technology guarantees long-distance and real-time transmission without any loss. It supports up to 700m for 4MP HD video via coaxial cable and up to 300m via UTP cable. Actual results verified by real-scene testing in Dahua's test laboratory. HDCVI technology inherits the born feature of simplicity from the traditional analog surveillance system, making itself the best choice for investment protection.
HDCVI system can seamlessly upgrade the traditional analog system without replacing existing coaxial cabling. The plug-and-play approach enables full HD video surveillance without the hassle of configuring a network. The camera is designed with an array of LED IR illumination for the best lowlight performance. Smart IR is a technology to ensure brightness uniformity in B/W images under low illumination. Dahua's unique Smart IR adjusts to the intensity of the camera's infrared LEDs to compensate for the distance of an object and prevents IR LEDs from overexposing images as the object comes closer to the camera. The camera supports switchable HDCVI high-definition video output and CVBS standard-definition video output. The two formats can be switched over through the OSD menu or by PFM820(UTC controller). This feature makes the camera compatible with both HCVRs and existing analog DVRs and facilitates debugging through analog testers. OSD menu provides multiple image adjustments and function settings to meet the requirements of different monitoring scenes. The OSD menu includes configurations such as backlight mode, day/night, white balance, privacy mask, and motion detection. The camera supports 11 OSD menu languages: Chinese, English, French, German, Spanish, Portuguese, Italian, Japanese, Korean, Russian, and Polish. The camera's outstanding reliability is unsurpassed due to its rugged design. The camera is protected against water and dust with an IP67 ranking, making it suitable for indoor or outdoor environments. With a working temperature range of -40 °C to +60 °C (-40 °F to +140 °F), the camera is designed for extreme temperature environments. Supporting ±25% input voltage tolerance, this camera suits even the most unstable power supply conditions.