The ACM-4000 series is an indoor economical cube camera. Featuring 30FPS @ 640x480 (VGA), Two way audio support this camera is ready for the your office today! Using a progressive scan CMOS sensor, the ACM-4001 provides high illumination down to 0.5 lux. With its very competitive price offering and compact design, ACM-4001 is suitable for surveillance in small stores, offices and home. The ACM-4001 also supports Power over Ethernet. Note: This ACTi cube cameras have support for 2 way audio. An internal microphone / speaker is included a a port is available for connecting a external speaker. This camera includes (free) 16 channel professional NVR software.