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Fire Alarm Sounders, Hooters and Beacons in Bhopal

Sounders, hooters, bells, strobes and beacons are the alarm devices that tell everyone in a building to evacuate, by sound, flashing light or both. FPS supplies conventional, addressable, voice, visual and hazardous area alarm devices from Morley by Honeywell, System Sensor, Apollo, Soft-Chip, Ceasefire, Agni, Ravel, Bosch and Siemens in Bhopal and across Madhya Pradesh.

System Sensor

System Sensor MHR/1 Mini Horn, Red

MHR/1Mini hornRed housing

A compact red horn with the universal fire symbol that sounds the fire alarm, with volume and tone set on rotary switches at the back. It synchronises without additional modules.

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Apollo

Apollo Soteria Base Sounder

SA5302-300APOBase sounderSoteria

An addressable, loop powered base sounder for the Soteria range that connects directly to an XPERT base, with a choice of tones and volume levels.

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Apollo

Apollo XP95 Sounder Base

45681-278APOSounder baseXP95 and Discovery

The non-isolating XP95 sounder base: a base sounder with integral mounting base for Discovery or XP95 systems, designed for indoor use.

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Agni

Agni Conventional Sounder Strobe, FR ABS

AD-ESF1ConventionalSounder and strobe

A conventional sounder cum strobe that pairs a high output electronic sounder with a high intensity strobe, for areas that need both an audible and a visual alarm. It works with most conventional fire alarm panels.

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Agni

Agni Conventional Sounder, MS Body

AD501 / AD501 LMTConventionalSounder

A conventional sounder (hooter) in a red MS (mild steel) body that gives a loud warning when the fire alarm panel detects a fire. Agni lists it as the AD501 and AD501 LMT.

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Soft-Chip
Soft-Chip

Soft-Chip Fire Alarm Hooter

HooterAudible alarmFor Soft-Chip panels

A hooter that gives the audible fire alarm, used with Soft-Chip fire alarm control panels. Specifications are confirmed on enquiry.

Soft-Chip
Soft-Chip

Soft-Chip Response Indicator (RI)

Response indicatorRIFor Soft-Chip panels

A response indicator that shows when a detector inside a closed room or ceiling void has operated. Specifications are confirmed on enquiry.

How to choose

Start with the system. Conventional devices run from a sounder circuit on the panel: examples are the Agni AD501 and AD502 hooters and AD-ESF1 sounder strobe, Apollo conventional sounders, VADs and the 6 inch fire bell, Bosch FNM-320 sounders and LX beacons, the Ceasefire TI-002271, TI-002272 and TI-002273, Ravel sounders and strobes, the System Sensor MHR/1 mini horn and P2RLED horn strobe, and the Soft-Chip hooter for Soft-Chip panels. Addressable devices take their address from the loop and must use the panel's protocol: Apollo Soteria, Discovery and XP95 (many also on CoreProtocol), Bosch LSN, Siemens Cerberus PRO on FDnet or C-NET and Cerberus FIT on C-NET, Morley-IAS, Agni FYRLAAST, Ravel single loop and multi loop, and Ceasefire Intelli-Sense. Most are loop powered, but the Ravel RE-314EBS sounder base needs an external 24 V DC supply. Many addressable models have a built-in isolator (EN 54-17) that keeps the rest of the loop working after a short circuit.

Next choose the form and the output. A base sounder fits under a detector on the ceiling, while a wall or open-area sounder mounts on its own; Morley by Honeywell and Siemens also offer sounder beacon bases. The alarm must be clearly heard above normal background noise, so compare the listed output: Ravel sounder bases give 80 dB at 1 m, Apollo XP95 sounder bases up to 91 dB(A), Ceasefire Intelli-Sense base sounders up to 94 dB at 1 m, Apollo XP95 open-area sounders 92 or 100 dB(A), Bosch FNM-420 addressable sounders up to 101.3 dB(A) indoors and 102.5 dB(A) outdoors, Bosch FNM-320 conventional sounders up to 112 dB(A), and the Bosch PA 10-SSM industrial sounder 117 dBA. Tones range from a single fire engine siren on the Ravel mini horn to 15 tone pairs on Apollo Soteria, Discovery and Intelligent sounders and 32 tones on Ceasefire, Bosch and Siemens Roshni sounders. EN 54-3 is the EN 54 part for fire alarm sounders; Ravel lists UL 464 on some sounders and System Sensor lists UL for its L-Series horn strobe.

Add visual alarms where a sounder alone may not be enough, such as noisy workshops and machine rooms, or where deaf or hearing impaired people may be present. Devices certified to EN 54-23 state a category and coverage: C for ceiling, W for wall and O for open class, as in W-3.1-10 or C-3-8. Morley by Honeywell, Apollo, Ceasefire, Bosch and Siemens list EN 54-23 models, and the Siemens low current beacons cover up to 7.5 m, switchable to 2.5 m to save power in places such as bedrooms, bathrooms and toilets. Ravel strobes (RE-716SS, RE-716ST) and the System Sensor P2RLED are set in candela instead, with Ravel offering 15, 30, 75 and 110 cd. A visual indicator (VID) gives supplementary flashing only. Xenon strobes such as the Bosch PY X-M-10-SSM (10 J) are listed for a large signalling area, and the Bosch halogen rotating beacon works indoors or outdoors.

Some sites need a special device. For hazardous areas, the Apollo Conventional I.S. open-area sounder is ATEX and IECEx certified, and the Bosch BEXS110D-24 Ex-proof sounder is ATEX approved for 2G (zones 1 and 2) and 2D (zones 21 and 22). Voice sounders add a spoken message to the tone: the Siemens FDS225, FDS227 and FDSB227 carry 15 built-in languages, and the Apollo Discovery voice sounder has four pre-set message pairs. Bosch uninterruptible sounders keep signalling even in a broken LSN stub, and the FNM-420U-A-BSRD with its power source keeps the alarm for 30 minutes after a bus fault, in line with VdS 3536. Agni lists 70 to 100 V AC (PA system) operation for its conventional hooters, Ceasefire offers a sounder beacon for its pressure switch compatible automatic extinguishers, and the Soft-Chip response indicator (RI) lights outside a closed room or ceiling void when a detector inside operates.

Frequently asked questions

What is the difference between a sounder, a hooter and a bell?
All three give the audible fire alarm. A sounder is an electronic device with selectable tones and volume, a hooter is the term widely used in India for an electronic alarm horn, such as the Agni AD501 and AD502 or the Soft-Chip fire alarm hooter, and a bell such as the Apollo 6 inch motorised fire bell gives the familiar ringing sound.
What is the difference between a VID and a VAD?
A VID (visual indicator device) flashes to give supplementary indication alongside the sounders. A VAD (visual alarm device) is certified to EN 54-23 for a stated category and coverage, so it can serve as a primary or supplementary alarm where sounders may not be heard or where deaf or hearing impaired people may be present.
How are beacon and strobe outputs rated?
EN 54-23 visual alarm devices carry a coverage code such as W-3.1-10 or C-3-8: the letter is the category, C for ceiling and W for wall, the first number is the maximum mounting height and the second is the size of the area covered, both in metres. Strobes such as the Ravel RE-716ST and the System Sensor P2RLED are set in candela instead, with Ravel offering 15, 30, 75 and 110 cd.
How loud should a fire alarm sounder be?
It should be clearly heard above the normal background noise everywhere it is meant to cover, so most models have adjustable volume. For example, Apollo XP95 open-area sounders select 92 or 100 dB(A), Bosch FNM-320 conventional sounders reach up to 112 dB(A), and the Bosch PA 10-SSM industrial sounder gives 117 dBA.
Can sounders and beacons be fitted outdoors?
Yes, several models are rated for it: the Bosch FNM-420-B-RD and FNM-420U-B-RD addressable sounders and PA industrial sounders are IP66, the Ceasefire TI-002272 and TI-002273 wall sounders are weatherproof as standard, and the Bosch rotating beacon works indoors or outdoors. Apollo Discovery and XP95 sounder bases are designed for indoor use.
Does FPS install sounders and beacons, and how do I get a price?
FPS supplies, installs and maintains sounders, hooters, strobes and beacons from all the brands on this page in Bhopal and across MP. Prices are shared on request: call or WhatsApp +91 92440 89060 with your panel make and quantities.

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