Table 1 Specifications; Figure 2 Dispersion Characteristics For Audible Signal Devices - Federal Signal 450E Instrucciones De Instalación Y Mantenimiento

In addition to fire alarm system applications, the Federal Signal
450E horn is excellent for general alarm, start and dismissal, coded
paging, and process control signaling in areas of high ambient
noise levels.
The Model 450E can be used indoors or outdoors, depending on
the back box used. When used with the weatherproof Model WB
back box, it meets Type 4X and IP66 requirements.
Operating Voltage: Fire Alarm Use: Regulated 24 Vdc (16-33 Vdc)
Current:
Inrush Current:
Audibility Rating:

Figure 2 Dispersion characteristics for audible signal devices

3 m
85 dB
-6 dB
Installation and Maintenance Instructions

Table 1 Specifications

General Signaling Use: 12-24 Vdc
0.25 A
764 mA rms over a 16.7 ms time window
90 dB per UL Reverberation Room.
99 dBA per ULC Anechoic Chamber.
For directional characteristics refer to Figure 2.
AUDIBLE SIGNAL DEVICE
27º
–3 dB
Model 450E Electronic Horn
14º
99 dB
3 m
-6 dB
–3 dB
85 dB
7