Chamberlain Wireless Indoor/Outdoor Intercom Units

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Crystal clear, secure 900MHz digital communication Mounts easily to any surface, even in shower Digital sound quality is clear and secure with a 1,000' range Comptatible with portable intercoms (RWIS/RWIA/LSIS/LSIA) and flush-mount intercoms (RIFMS2/RIFMS1) Expandable to an unlimited number of units to enhance your home's communication to multiple locations Requires 4 "AA" batteries Includes stainless steel screws and 3M double-sided tape for mounting