Silent Call Medallion Series Wireless Doorbell Transmitter

Quick Overview Sends a signal to any Medallion Series Receiver whenever the doorbell button is pushed. Intended for homes or doors without a doorbell system already installed. The Wireless doorbell is for homes or doors that do not already have a doorbell system. It easily mounts outside any door. Whenever a visitor presses the button, a signal is sent to any Medallion Series Receiver, which will alert you by flashing light or vibration. With the Medallion Series you get million-code technology, which means your system will never get a false alert from a neighboring radio frequency signaling system. Its ideal for apartments, dorms, condos and hotels, as well as single-family homes. - Five year warrantyBrandSilent Call - Product TypeSignalerSignaler TypeTransmitterCompatible Signaling System - Signals toDoorbellDo I need another product to make this work Yes, any Silent Call Medallion Receiver - Power SourceBatteryLamp PluginNoVibrating AlertNoWhats in the Box - Transmitter, 12 volt battery