264 HD DVR 4Pcs 720P 24IR-Leds Outdoor Bullet CCTV Security Camera. 264 AHD DVR 4Pcs 720P 24IR-Leds 3.6mm Lens Outdoor Waterproof CCTV Security Camera System. Model: OT-AHD4C4A #ID: 1002261. 720P 24IR-Leds Bullet 3.6mm Lens CCTV Camera. Main processorTechnical grade embedded microprocessor HI 3520DEmbedded LINUX operating system. Display screen 1/4 screen (take analog channel as an ...