A miniature solid state buzzer featuring long life high reliability low current drain no moving contacts no arcing no r.f. noise. It is small but with a clear penetrating sound. Dimensions 23 x 16.5 x 15.5mm deep. Fixing centres 27.5mm x 8BAOverall length 33.5mm. Finished in cream plastic. Two types are available Specifications Type Voltage Impedance Frequency Output atrange 30cm 6V4 to 9V240 Omega 400 Hz 75d B12V9 to 20V480 Omega 400 Hz 75d B Buzzers are for DC operation only & approx. 100mm of lead attached is colour coded red positive black negative.