Murata® This sale is for 1 piece PKM24-4A0 Murata Miniature Piezo Alarm Specifications Frequency : Rated Voltage (V): Mean Current Consumption (mA): Coil Resistance (ohm): Sound Output at 10 cm (dB): Rated Frequency (Hz): Operating Voltage (V): Operating Temperature (°C): Condition: "NEW" New Old Stock What you see is what you get