Two-Way Voice Communication An external microphone and amp-equipped speaker, both optional, enable two-way voice communication3 (transceiver system) between the network camera and a PC used to monitor the camera image. In addition to conventional monitoring of images and sound, voice messages can be transmitted from the PC to the network camera. Voice transmission and reception can be switched easily from the PC used to monitor the image. CCD Sensor for Enhanced Image Expression This camera features a CCD (Charged Couple Device) for sharp, enhanced image expression. The image refreshing speed (maximum) has been increased to 30 images per second4 for smoother displays of moving images. Record Directly onto SD Cards The BB-HCE481A features an SD Memory Card slot for recording images captured by the network camera directly onto an SD Memory Card (sold separately). * Voices cannot be recorded. Simple Ethernet Connection - No PC Required Our cameras are attached through an Ethernet connection (or router) and power source, you don't need a computer at each location you want monitored. Each camera has a built-in Web server with IP address. To view the camera's images on a PC,