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K1006 Two Tone Doorbell

Two Tone Door Bell
Part Number: K1006
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This kit is based on a 555-timer integrated circuit and features battery saving circuitry and a trimpot to enable adjustment of the second tone. The kit is designed so that the printed circuit board, speaker and push button switch can be fitted neatly into a UB3 utility box.

Requires a 9 volt battery.

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