Federal Signal’s non-metallic loudspeakers, model P-LS2B and P-LS2C, are designed for use in industrial public address and general alarm applications, where corrosion resistance and ATEX/IEC Certification are required. P-LS2B and P-LS2C loudspeakers are available in an ATEX/IEC Zone 1 explosion-proof version certified IP66 for ingress of dust and combustible gas to either Group IIB or Group IIC.
P-LS2B and P-LS2C loudspeakers, designed to accept an audio input of 100 Vrms, are manufactured from corrosion-resistant, anti-static glass-reinforced polyester (GRP). Each speaker is transformer coupled with a maximum power output of 25 watts and is supplied with 10 preset taps (25, 20, 15, 10, 5, 2, 1.5, 1, 0.5 and 0.2 watts) to adjust sound output.
Mounting is provided by a “common template” stainless-steel ratcheted mounting bracket that locks the loudspeaker in position at a specific angle without slipping. Optional swivel mounting bracket contains three slotted mounting holes to further adjust speaker position and adapt to a variety of different surfaces.
Connection for field wiring is provided by two M20 X 1.5 mm threaded openings in the bottom of the rear cover and terminated via internal terminal blocks. All external hardware is manufactured from stainless steel to resist corrosion and provide serviceability for years to come.


Cable Entries 2 x M20 x 1.5mm
Cable 0.5 - 4mm2 (12-22 AWG) conductors
Diameter 9.150 in
Height 11.270 in
Length 12.550 in
Housing Material Glass-reinforced polyester (GRP)
Product Color Black
Audio Input 100 Vrms
Max. Audio Output (max.) 124dB @ 25 Watt (1 meter)
Wide Range Frequency Response 150Hz - 21kHz
General Weight 13 lb
Shipping Weight 15.30 lb

Ordering Information

Model Types
Model Description UPC
P-LS2B Loudspeaker, corrosion resistant, ATEX Zone 1 Rated Gas Group IIB 78297922740
P-LS2C Loudspeaker, corrosion resistant, ATEX Zone 1 Rated Gas Group IIC 78297922741
Replacement Parts
Description Part Number UPC
Bracket, mounting, P-LS2B K8595171A 782979205388
Kit, fuse module and gasket K859500361A 782979204787