5" bidirectional aluminium sound projector. 10 W (100V) transformer. Selectable power 10-5-2.5W. Frequency response 130 Hz - 20000 Hz; Sound pressure: max SPL @1m: 101dB; max SPL @4m: 89dB; sensitivity 88dB; coverage angle: 130°. Aluminium installation support. Ceramic inlet and outlet connectors with thermal protection fuse. Material: aluminium; Protection rating: IP66; colour: Grey-RAL 7035. Dimensions: Depth: 184mm; Diameter: 146 mm. Weight 3.25 kg. EN 54 -24 Certification 1488-CPR-0641/W.