Apparatus for producing an audible signal when a voltage is applied thereto. The apparatus includes a reed switch having electrical contact leads, means responsive to the voltage to cause the switch to open and close periodically whereby the leads vibrate, and means responsive to the vibration to produce said signal.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of my copending application, Ser. No. 795,099 filed Jan. 29, 1969, and now abandoned for Audible Signal Minder
