Arm Electronics 540TVL Day Night Dome Security Camera is an appealing and powerful mini dome camera. The Arm Electronics C540MDVAIDN has a built-in Vari-focal lens and a 3-axis adjustment for perfect positioning. Extremely low light levels of 0.01 Lux, and advanced technology like BLC, AWB, and AWG make this a high performance dome security camera for either 12VDC or 24VAC video surveillance systems.