Electret microphone with comparator circuit for sound detection. Power ON and sound detected LED indicators. Digital and analogue outputs....
Transducer without internal driving circuit. 120mm (approx) flying leads. 23mm diam. 5mm height. 4kHz resonant freq. 28Vpp max driving signal...
66mm diameter, 18mm deep, 500mW power handling. Paper cone and solder tag connections.
2.5V to 10V. 9.8mm x 7mm. With PCB pins.
£0.86... more info
PKM13EPYH4002. 4kHz resonant frequency, 12.6mm diam. PCB mount. Example code for using the transducer with an Arduino Uno is given here.
Built-in oscillator circuit - continuous tone. Operating voltage: 3-30Vdc. Frequency 2.7kHz Output 90dB@12V Diameter 31.5mm - Height 13.5mm Sound...
16mm diameter 1W 8-ohm speaker with 25mm flying leads. Foam surround with adhesive for sticking to a panel.
20mm diameter 1.5W 8-ohm miniature mylar speaker.
Foam edged paper cone with chrome hf dome. 78mm diameter, 10W rms, 8-ohm, 120Hz-16kHz. Resonant freq. 120Hz, Sens. 88dBV/Pa, wt 0.4kg
Weatherproof Mylar cone with chrome hf dome. 102mm diameter, 15W rms, 8-ohm, 210Hz-7kHz. Resonant freq. 210Hz, Sens. 98dBV/Pa, wt 0.568kg 4.8mm...
50mm diameter, 15mm deep, 500mW power handling. Paper cone.
Piezo element, 20mm diameter, fitted with 90mm red and black flying leads. 6kHz resonant frequency, 250 Ohm resonant impedance, 14nF capacitance.
Piezo element, 27mm diameter, fitted with 90mm red and black flying leads. 4kHz resonant frequency, 3000 Ohm resonant impedance, 25nF capacitance.
Built-in oscillator circuit - continuous tone. Operating voltage: 3-24Vdc. Diameter 30mm - Height 15mm Fixing holes 3.3mm diameter on 40mm centres....
Built-in oscillator circuit - intermittent tone. Operating voltage: 3-24Vdc. Diameter 30mm - Height 15mm Fixing holes 3.3mm diameter on 40mm centres....
Piezo element, 32mm diameter, fitted with 90mm red and black flying leads. 3kHz resonant frequency, 500 Ohm resonant impedance, 35nF capacitance.