The P-HS-15ExdFM(T) Explosion Proof Horn Loudspeaker is a Factory Mutual certified d-model that meets the demanding requirements of Class I, Division 1 areas in which an atmosphere where a mixture of air and flammable substances in the form of gas, vapor or mist is not likely to occur in normal operation but, if it does occur, will persist for only a short period.

Guardian Telecom Explosion Proof Speakers & Ringers meet rigorous demands of the highest hazardous area classifications. Intrinsically safe, they maintain appropriate safety standards while in environments where ignitable concentrations of flammable gases, vapors or liquids may be present under normal operation conditions.

Guardian Telecom manufactures supplies and distributes a wide selection of Explosion Proof, Hazardous Area, ATEX-IEC and General Area Ringers and loudspeakers from leading manufacturers around the world to meet the unique demands of Industrial Communication projects.

Guardian’s represents DNH, E2S, Federal Signal, MEDC and TOA, and has access to an extensive range of other world class leading manufacturers.

Guardian trained and qualified personnel work with customers to specify individual product or total project solutions and make informed purchasing decisions based on budget, technology, applications and relevant standards.



Standards Compliance

Factory Mutual Approved – Class I Division 1

Factory Mutual Approved
Class I, Division 1, Groups B, C and D
IP-67 (Not including acidic atmospheres)

Electrical Equipment for use in Hazardous (Classified) Locations General Requirements: FMRC-3600 (1989)

Explosion-proof Electrical Equipment General Requirements: FMRC-3615 (1989)

Electrical and Electronic Test, Measuring, and Process Control Equipment: FMRC-3810 (1989)

Degrees of Protection Provided by Enclosures (IP Code) IEC-529 (1989)

FMSCertification Number J.I 0D0A5.AE (3615)

NS-EN ISO 9001:2015

DNH A/S Den Norske Høyttalerfabrikk A/S Kragerø, Norway has implemented and maintains a Quality Management System which fulfills Nemko’s provisions for Management System Certification and the requirements of the following standard NS-EN ISO 9001:2015.

The certificate covers the following activities:
Design/development, purchase, production and marketing of Loudspeakers, Beacons and Junction Boxes – including versions for hazardous locations (Ex).

Visit manufacturer’s website or contact manufacturer for details.

Product Features

  • Manufactured by DNH
  • Aluminum alloy / RAL 7035
  • Brackets and all outside nuts are stainless steel
  • Effective frequency range 410 – 7000 Hz
  • Conduit entry 1/2” – 14NPT threads
  • Primary nominal tappings:

1 : 2 – 15.0 W

2 : 3 – 7.5 W

3 : 4 – 3.5 W

1 : 3 – 2.7 W

2 : 4 – 1.3 W

1 : 4 – 0.8 W

1 = Red, 2 = Yellow, 3 = Green, 4 = Blue

  • 8 ohm version available
  • IP-rating 67
  • Rated / maximum power 15 W/15 W
  • SPL 1W/1m 105 dB
  • SPL rated power 116 dB
  • Effective frequency range 410 – 7000 Hz
  • Dispersion (-6dB) 1kHz / 4kHz 140° / 40°
  • Operating temperature 104°F / -4°F (40°C / -20°C)
  • Order number: P-HS-15ExdFM(T)
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