SoniCrest HCM1205F 5V Electro-magnetic Sound Generator

RVFM-5V-Electro-Magnetic-Sound-Generator-SoniCrest-HCM1205F-p-A-5V-electro-magnetic-sound-generator-encapsulated-in-a-low-profile-housing-making-it-particularly-suitable-for-inclusion-in-miniature-electronics-instrumentation-p-SoniCrest-HCM1205F-5V-Electro-magnetic-Sound-Generator

Price: £1.42 from Rapid Online Rapid Electronics Ltd.