Check the listing for details. Silent Call Medallion Series Cell Phone Transmitter. Condition: New. Listed at 76.18 USD. Be alerted when family members, friends or others contact you. The Medallion™ Series Cell Phone Transmitter notifies you to any incoming cell phone communication by sending a signal to any Medallion™ Series receiver whenever it detects a vibration from your cell phone. Simply lay the transmitter’s disc on your smartphone to monitor the incoming communications. It is powered by two AA batteries which ensures you will never have false alarms from neighbors using other RF-based products in apartments, condominiums, dormitories, hotels and public housing. Perfect for single-family homes! FeaturesAlerts of incoming cell phone communicationsWorks with all Medallion™ Series ReceiversRange: Up to 500 feetOperates on two (2) AA batteries (included)Includes a low-battery indicator light 5-Year Limited Warranty