US Patent 7218220 Signaling system

A signaling system includes a primary signaling doorbell assembly that includes a sound emitter, an actuator electrically coupled to the sound emitter, and a transmitter electrically coupled to the actuator that is adapted for sending a wireless signal. A power supply is electrically coupled to the actuator. A plurality of secondary signaling assemblies is provided. Each of the secondary signaling assemblies includes a receiver adapted for receiving the wireless signal from the transmitter, a signal member electrically coupled to the receiver, and a power supply electrically coupled to the transmitter and signal member. The signal member is adapted for signaling a person when the receiver receives the wireless signal.