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K1020 Electronic Siren

Part Number: K1020
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The Electronic siren kit uses two 555 timer integrated circuits and a BD140 transistor to generate siren sounds through a speaker. It features selectable ‘Hee Haw’ or single tone operation and a switch to alter the pitch of the sounds. It can be used with a larger speaker or a horn speaker for even louder sounds.
This Kit is ideal for using in alarm projects and fits neatly into a UB3 utility box. It is also useful for demonstrating wave forms on a oscilloscope. This kit requires a 9 volt battery or a 9 to 12 volt power supply.

Requires a 9 volt battery.

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