Base Sounder Indoor
FNM‑420‑A‑BS‑RD | FNM‑420‑A‑BS‑WH
Installation manual
Installation
Safety instructions
Notice!
Installation must only be carried out by authorized personnel.
If you operate the base sounder without automatic detector or LSN strobe, you must bridge contacts b1 and b2.
Only if the sounder volume is set to the maximum level, the certified sounds (no. 1, 8, 10, 24) comply with EN 54-3.
Certified sound measurements are listed in Bulletin_Sound_Pressure_Level_EN54-3.pdf (F.01U.344.057), which can be obtained from the manufacturer.
Warning!
Live components and stripped cable! Risk of injury from electric shock. The system must be current-free during connection work. Notice!
Electrostatic discharge (ESD)! Electronic components could be damaged. Ground yourself using a wrist strap or take other suitable actions.
Functional description
The volume of each 32 tone variants (incl. DIN tone DIN 33404 part 3) has up to 5 levels and can be adjusted according to the operational environment. The sound level varies between 65 dB and 92 dB depending on the tone type and volume. You can operate the base sounder using a 420 series automatic detector, a FNS-420-R LSN Strobe or a suitable cover.
Technical specifications
| U | 15 V DC – 33 V DC | |
 | Max. 92 dB(A) | |
 | ≤ 3.85 mA | |
 | < 1 mA | |
 | 0.28 mm² – 2.5 mm² | |
 | 115 x 50 mm | |
 | 115 x 40 mm | |
 | Plastic, ABS | |
| FNM-420-A-BS-RD: ~ RAL 9010 | FNM-420-A-BS-WH: ~ RAL 3001 | |
 | 200 g | |
 | -10 °C – +55 °C (-25 °C – +70 °C)* | |
 | IP 21 C (IP 43*) | |
 | 440 Hz to 2.90 kHz | |
| *Manufacturers specification, not third party verified | ||
Bosch Sicherheitssysteme GmbH
2022-10 | 5 | F.01U.099.622Bosch Sicherheitssysteme GmbH
Robert-Bosch-Ring 5
85630 Grasbrunn
Germany
www.boschsecurity.com
© Bosch Sicherheitssysteme GmbH, 2022
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