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Fire safety products Sounders

Unique ref.: sounders-FNM-420
Brand: Bosch Security and Safety Systems
Product family: Fire detection devices
Product group: Adressable sounder
Width (mm): 110
Height (mm): 110
Depth (mm): 95
Date of publishing: 2017-07-01
Edition number: 1
Type: Assembly (multiple objects)
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This is just one product of this category for which we offer BIM data. 

All current products with BIM information can be found on our Bosch BIM website: 


The family includes three sounder types with a number of products:

  • FNM-420U Sounders, uninterruptible (FNM-420U-A-WH, FNM-420U-A-RD, FNM-420U-B-RD)
  • FNM-420-B-RD Sounder Outdoor, Red (FNM-420-B-RD)
  • FNM-420-A Sounder Indoor (FNM-420-A-WH, FNM-420-A-RD)

FNM-420U Sounders, uninterruptible:
Sounder for uninterruptible alarm signaling at the location of a fire, for indoor and outdoor areas

FNM-420-B-RD Sounder Outdoor:
analog addressable stand-alone sounder for outdoor use, red

FNM-420-A Sounder Indoor:
analog addressable stand-alone sounder for indoor use

FNM-420U Sounders, uninterruptible:
- Uninterruptible alarm signaling, even in the LSN stub
- Maximum current consumption of less than 4.35mA
- Volume of up to 101.3dB(A)
- Immediate synchronization
- Long life cycle and modern design

FNM-420-B-RD Sounder Outdoor:
- Volume of up to 102.5dB(A)
- Maximum current consumption of less than 4.05mA
- Up to 75 sounders per LSN 0300 A loop and 100 per LSN 1500 A loop
- Immediate synchronization
- 32 different tone types can be selected (incl. DIN tone)

FNM-420-A Sounder Indoor:
- Volume of up to 101.3dB(A)
- Maximum current consumption of less than 4.05mA
- Up to 100 sounders per LSN loop
- Immediate synchronization
- 32 different tone types can be selected (incl. DIN tone)

Operating voltage x 15 V DC to 33 V DC
Quiescent state x less 1.0 mA
Alarm x <4.05 mA

Connections (inputs/outputs) x 0,28 mm² to 2,5 mm²
Dimensions (H x W x D) x 105 x 105 x 95 mm (outdoor: 110 x 110 x 95 mm)
Material x Plastic, ABS
Color x red, similar to RAL 3001 (white, similar to RAL 9010)
Without packaging x 250 g
With packageing x 300 g

Environmental conditions:
Permissible operating temperature x -25 °C to +70 °C (FNM-420 U: -20°C to +70°C)
Permissible storage temperature x -25 °C to +85 °C (FNM-420U: -20°C to +70°C)
Protection class as per EN 60529 xFNM-420-A: IP 42 * (FNM-420-B: IP 66 *) (FNM-420U: ---)

Special features:
Sound pressure level at a distance of 1 m x max. 101.3 dB(A) (FNM-420-B: 102.5 dB(A))
Frequency range x 440 Hz up to 2,90 kHz

Material main: ABS
Material secondary:
Designed in:
Manufactured in:
Weight Net (Kg): 0.25

BIMobject Category: Fire Products - Protection
IFC classification: Alarm
UNSPSC name: Fire alarm systems
UNSPSC code: 46191505
Uniclass 1.4 Code: L76253
Uniclass 1.4 Description: Alarms/sounders
Uniclass 2.0 Code: PR-16-03-30
Uniclass 2.0 Description: Fire Alarm Sounders
NBS Reference Code: 16-03-30
NBS Reference Description: Fire Alarm Sounders