Clean used surveillance cameras, working with no faults. Technical Specifications: Resolution: These cameras typically offer resolutions ranging from 5 megapixels (2560 × 1944) to 8 megapixels (4K) for clear details. Night Vision: Equipped with infrared (IR) technology with a coverage range usually up to 30 or 40 meters. Lens: Usually comes with a fixed lens in different sizes such as 2.8mm (for a wide viewing angle) or 3.6mm. Weather Resistance: With an IP67 rating, meaning they are waterproof and dustproof, suitable for outdoor installation. Additional Features: Compression Technologies: Often support H.265+ technology to reduce storage space consumption while maintaining video quality. Audio: Some models are available with a built-in microphone for audio transmission over the coaxial cable. Compatibility: Supports multiple video outputs (4 in 1) such as TVI/AHD/CVI/CVBS to suit different recording devices. Serious buyers only.