The Best Wireless Home Intercom System.

This four-channel home intercom system was selected best by the Hammacher Schlemmer Institute for sound clarity, ease of use, range of use, and features. Unlike lesser models that transmit a signal through a home's electrical system and cannot reach rooms on different circuits, this unit uses a wireless 900MHz digital spread spectrum signal to transmit clear, uninterrupted sound to every room, up to 1, 000', ensuring that all conversation is private and free from interference from other wireless devices in your house or the surrounding neighborhood. Analysts found that this model delivered the best results for sound clarity; voices were free of static and easy to understand. The intercom was easy to set up due to a "learn" feature which links both units together into a private wireless network. The intercom was rated best for features because it can be used in voice activation mode (for use as a baby monitor) and conference mode. Set of two. Requires four AA batteries. 2" H x 10" W x 9" D. (1 1/2 lbs.)