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An extremely loud PCB-mounting, piezoelectric buzzer designed to operate over a wide range of supply voltages. It has a built-in driver circuit and requires only a DC voltage to drive it. Working with a 24 Vdc supply voltage, this tiny unit can supply sound levels of over 95 dB at a 30 cm distance. The unit will operate well with 5V TTL voltages, drawing only around 2 mA. It will therefore make an excellent ---bell--- or warning alarm for digital systems. Two 1.5 mm dia. holes are required 16mm apart. The case is finished in a cream colour, and features a dot to indicate the side with the positive terminal.
Price: £2.99 from Tesco
| Retailer | Price | |
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| Tesco | £2.99 | Go to shop |
A buzzer with a loud, clear, penetrating tone for use where direct PCB mounting is not convenient. The buzzer has two 3.5 mm clear mounting holes 38 mm apart, and two wires are provided for making the connection.
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