LF20W - Audio fire alarm device

Audio fire alarm device

  • Power Supply: 18V-30V
  • Sound power (max, 90° V. plane): >90dB(A) @ 1m
  • High Sound Level Buzzer
  • Selectable Buzzer
  • New Design, Less Thick
  • Wall Mounting
  • EN 54-3:2001 + A1:2002 + A2:2006 compliant

LF20W is an audio warning panel, available in different models and suited for any emergency situation such as fire, flooding, gas leaks, etc., where audio information is needed. Its special design, very pleasant is particularly suited for hotels, shops, malls and cinemas.

Technology and Design

A special light diffuser guarantees the uniform lighting of the panel’s label. A high sound level buzzer ensures an efficient acoustic warning in case of alarm, granting the compliance to the norm UNI EN54-3.
The label inside the panel is provided with the standard sentence “FIRE ALARM”, but labels with different messages and languages are available as accessory. Thin and special design make LF20W warning panel unique for technology and efficiency.

Thickness 14mm


Assembly instructions

  • Make four holes into the wall to fit the holders (1, fig 2)
  • Fix the mounting box with the four screws (2, fig 2)
  • Connect the power supply to the terminals (Figure 1)
  • If the sounder is not needed, connect jumper SILENT (Figure 2)
  • Fix the central part to the mounting box with the four screws (3, fig 2)
  • Hook the cover and screw it (4, fig 2)

Fig. 1

Fig. 2

General Specifications

Product codeLF20W (Wall mount model)
Flammability GradeV2
Protection ClassIP21C
Nominal Voltage24 Vd.c (min 18Vd.c., max 30 Vd.c.)
Line Consumption 24V21mA
Line Consumption 8V10uA max
Type of ConnectionBy terminals
Dimensions 292x130x55mm (L x H x P)
Sound power (min) 79 dB(A) @ 1m, 18Vd.c. H.P. 165°
Operating Temperature Da -10°C a +55°C
Sounder SpecificationsSound power (max, 90° V. plane): >90dB(A) @ 1m
Buzzer frequency: 2,8KHz
Sound pulse frequency: 1Hz