Silent Call Medallion alerting system allows a deaf or deaf/blind user to be alerted to the activation of any one of a number of common household devices including a doorbell, telephone ringer, smoke detector, sound monitor, or door/window activity.. The kits below contain one or more transmitters and a body worn receiver. There is no limit to the number of receivers and/or transmitters that can be added to a kit. When a transmitter activates, the alarm notification system sends a digitally coded signal to all receivers within range. The maximum distance between the transmitter and a receiver is typically 100 feet.