Add this wireless camera/intercom module to a SD4500 phone system base with handset to enjoy full-motion video and audio monitoring.When used with the cordless video/audio expansion handset, this module creates an affordable, customized color video/audio monitoring and intercom system for your home or office. Night vision capabilities help to ensure that you'll be able to see what's going on in and around your home or office even in low-light situations. 2.4 GHz Digital provides great range and audio performance Wireless; remotely connect to system base Does not interfere with wireless home networking Hands-free intercom lets you communicate between rooms in your home Camera is equipped with infrared capabilities for night vision 7 Volt Power Adapter not included Battery not included Units are repackaged and have some scuff marks