Mallory Sonalert Products SCE028MD3SR4B Brand/series: Sonalert?® Capacitance @ Frequency: - Color: Black Color, Housing: Black Current Rating: 40mA Current, Rating: 40 mA Frequency: 2.9kHz ID_COMPONENTS: 1691889 Lead Free Status / Rohs Status: RoHS Compliant part Mounting Type: Panel Mount Operating Mode: Siren Primary Type: Siren Series: Sonalert?® Size / Dimension: Circular - 42.85mm Dia x 35.85mm H Sound Level: 85 to 95 dBA Sound Pressure Level: 75dB ~ 85dB Standards: UL Recognized Termination: Terminal Block Tone: Siren Type: Piezo Indicator, Internal Drive Voltage - Rated: 16 ~ 28VDC Voltage Range: 16 ~ 28VDC Voltage, Operating: 16-28 DC Voltage, Supply: 16-28 VDC