SC-DB1003-1 Silent Call® Doorbell Transmitter is attached to your existing doorbell chime. When your doorbell button is pressed, it activates the Silent Call transmitter. Easy to install. Low voltage wiring does not require an electrician.
SC-DB1003-2 Silent Call® Doorbell Transmitter with remote button is supplied with a wired (removable) doorbell button. It is intended for installation in places where there is no existing wired doorbell or where the existing doorbell is part of an intercom system. The button is installed outside the door with the wire running between the door and the frame to the transmitter which is placed inside the door.
SC-DB1003BRKT The clip on Doorbell Transmitter with bracket is a small device that clips over the edge of a standard wooden door. When the doorbell button is pressed, it transmits a signal that activates any Silent Call® receiver with Doorbell indicator.