Color: black. Diameter: 50mm. Impedance: 8 Ohms. Power: 2W. Weight: 48g. Operating temperature: -40...70°C. External dimensions: Ø50x18.5mm, Ø50x18mm. Resonance frequency: 300Hz. Insulation class: IP65. Height/thickness: 18.5mm. 18mm. Mounting cutout diameter: 46mm. Beep type: loud speaker. Sound pressure: 84. Maximum power: 3W. Sound frequency: 180...17000Hz