RS PRO 90dB Panel Mount Continuous Internal Piezo Buzzer, 33 x 23 x 17mm, 3V dc Min, 16V dc Max
2kHz, Minimum Frequency: 3200Hz, Supply Current: 8mA.RS PRO 90dB Panel Mount Continuous Internal Piezo Buzzer, 33 x 23 x 17mm, 3V dc Min, 16V dc Max, Diameter: 23mm, Length: 33mm, Minimum Operating Temperature: -20°C, Maximum Operating Temperature: +60°C, Maximum Frequency: 4.