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.

iSpeak 5EN 6 W ABS plastic with metal grill cabinet loudspeakers with built-in 100 V transformer and 5" (127 mm) full range speaker. Simple installation on any flat surface horizontal or vertical. Rotating logo. Ideal for use for public address and background music applications. Best for retail shops, schools, government buildings. Conforms EN54-24 standard.

Rated power: 6 W
Transformer power taps: 6 W - 3 W - 1,5 W
Sensitivity: 91 dB (1W/1m)
Frequency response: 200 Hz - 12 kHz
Dimensions: 265 mm x 165 mm x 72 mm
Colour: White (RAL9016)