These Miniature Buzzers are a low cost miniature transistor oscillator 6V buzzer with flying leads. They have a single-tone frequency of 400hz and a sound output of 75dB @ 200mm. They are rated for 4V - 8V (6V nominal) and a current of 25mA and the driver circuitry is built in. These buzzers are supplied as a pack of 10. The buzzer unit is L23mm x W17mm x H15.5mm, with fixing centres at 27.5mm, which gives a total length measurement of 33.5mm. The colour-coded (red & black) flying leads are 100mm. To ensure optimum performance and to protect the buzzer, ensure that the supply (e.g. batteries) is connected in the correct configuration. Features: * Low-cost miniature transistor oscillator 6V buzzer with 100mm flying leads. * They have a single-tone frequency of 400hz and a sound output of 75dB @ 200mm. * Driver circuitry is built in. * Rated for 4V - 8V (6V nominal) and a current of 25mA. * L23mm x W17mm x H15mm, with fixing centres at 27.5mm, which gives a total length measurement of 33.5mm. * Supplied as a pack of 10. Dimensions: * Length: 23mm. * Width: 17mm. * Height: 15.5mm. * Fixing Centres: 27.5mm. * Total Length: 33.5mm.