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Bosch Fire Alarm Sounders and Beacons in Bhopal

Fire Protection System (FPS), a Bosch dealer in Bhopal, supplies Bosch alarm sounders and beacons: AVENAR all-in-one 4000 sounder and visual alarm bases, FNM-420 addressable sounders and base sounders, FNM-320 and LX conventional sounders and beacons, industrial sounders and strobes, and an Ex-proof sounder. FPS installs, tests and maintains them across Madhya Pradesh.

Where to use Sounders & Beacons

  • Offices, hotels and hospitals on a Bosch LSN addressable system
  • Rooms that need both a sounder and a visual alarm at one point (AVENAR all-in-one 4000)
  • Areas with hearing impaired occupants or high background noise, using strobes and beacons
  • Outdoor walls and yards (outdoor sounders rated IP66)
  • Factories, warehouses and other noisy industrial areas (PA industrial sounders and strobes)
  • Small buildings with a conventional fire panel (FNM-320, FNS-320, LX range)
  • Hazardous areas in ATEX zones 1, 2, 21 and 22 (BEXS110D-24 DC)
  • Extra local alarm indication with a rotating beacon

Bosch Sounders & Beacons models

How to choose

Start with the system. The AVENAR all-in-one 4000, FNM-420 sounders, FNM-420 base sounders and the FNS-420-R strobe are analog addressable devices for Bosch LSN loops, so the panel controls and monitors each one. The FNM-320 sounders, FNS-320 beacon, LX sounder beacon and LX beacon are conventional devices, and the PA industrial sounders, PY industrial strobe and BEXS110D Ex-proof sounder take a 24 V DC supply.

Uninterruptible versions, with U in the code, keep signalling even if an LSN stub line is broken. The FNM-420U-A-BSRD base sounder, used with its high performance power source, maintains the alarm for 30 minutes after a bus fault in line with VdS 3536, and the AVENAR all-in-one 4000 is powered by the loop in standby and by its built-in battery in alarm, so it needs no external power supply.

Then choose sound and light for the space. Bosch gives up to 101.3 dB(A) for the FNM-420-A indoor sounder, up to 112 dB(A) for the FNM-320 range, 107 dBA for the PA 5 and 117 dBA for the PA 10-SSM, all measured as Bosch states. For visual alarms, the LX range and the PY X-M-10-SSM strobe comply with EN 54-23, the European standard for visual alarm devices, and the LX devices give up to 7.5 m coverage. Base sounders mount under a detector, so detection and sound share one ceiling point.

FPS supplies, installs, tests and maintains Bosch sounders and beacons in Bhopal and across Madhya Pradesh. Approvals differ from model to model, so check the list under each one and confirm the exact part number with FPS.

Frequently asked questions

What is the Bosch AVENAR all-in-one 4000?
It is an analog addressable base that combines a sounder (EN 54-3) and a visual alarm (EN 54-23) in one indoor device, and it can carry any detector from the AVENAR detector 4000 series. It runs from the loop in standby and from its built-in battery in alarm.
What does uninterruptible mean on Bosch sounders?
Uninterruptible sounders, with U in the model code, keep signalling the alarm even if an LSN stub line is broken. With its power source, the FNM-420U-A-BSRD base sounder keeps the alarm going for 30 minutes after a bus fault, in line with VdS 3536.
How many Bosch addressable sounders can be on one loop?
Bosch states up to 100 FNM-420-A sounders or FNM-420-A-BS base sounders per LSN loop. For the FNM-420-B outdoor sounder it gives 75 per LSN 0300 A loop and 100 per LSN 1500 A loop, and for the AVENAR all-in-one 4000 up to 84 per loop, or 127 without detectors.
Which Bosch sounder is for explosive areas?
The BEXS110D-24 DC is an Ex-proof sounder that Bosch lists as ATEX approved for categories 2G (zones 1 and 2) and 2D (zones 21 and 22), with a die-cast aluminium housing and up to 113 dB(A).
What is EN 54-23?
EN 54-23 is the European standard for visual alarm devices in fire alarm systems, just as EN 54-3 covers sounders. Bosch states which part each model meets, for example EN 54-23 for the LX beacons and the PY X-M-10-SSM strobe.
Does FPS install Bosch sounders and beacons in Bhopal?
Yes. FPS is a Bosch dealer and supplies, installs, tests and maintains Bosch sounders and beacons in Bhopal and across Madhya Pradesh. Prices are on request: call or WhatsApp +91 92440 89060.

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