Arm electronics CX550DN is a Sony EXview Based Day Night Security Camera with low light abilities of 0.003Lux and high resolution of 550TVL Day and night. The Arm electronics CX550DN Exview Day Night Security camera is an excellent choice for CCTV systems with critical True Day night needs. CX550DN from Arm electronics supports DC Auto Iris Lenses, is Dual voltage and with it mechanical IR Cut Filter its true day night properties match wonderfully with IR illumination.