EN 54 is a standard of the European Union for fire detection and fire alarm systems, and the relevant parts to the voice alarm and audio industry are part 16, which is concerned with voice alarm control and indicating equipment, and part 24, which refers to loudspeakers.

SP10EN plastic 10W power sound projectors. Quality sound, U-bracket mount, 100V transformer power taps, 130º sound dispersion and 130 Hz - 15kHz frequency response. SP 10EN has built-in 5" (127 mm) full range speaker. Conforms EN54-24 standard.

Rated power: 10 W
Transformer power taps: 10 W - 5 W - 2,5 W
Sensitivity: 92 dB (1 W/1 m)
Frequency response: 150 Hz - 16 kHz
Dimensions: ø138 mm x 205 mm
Colour: White (RAL9016)