The P-HP-20(T) is a 20W, plastic, IP67, marine grade weatherproof horn speaker. It is manufactured to operate in extreme weather conditions.

To meet your requirements that fall outside of hazardous rated areas, Guardian Telecom offers a wide variety of General Area, indoor/outdoor exterior Speakers & Ringers. From metal to plastic and horn to ceiling styles.

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

Bureau Veritas Marine Division - Recognition For BV Mode II Scheme

Bureau Veritas Marine Division, Recognition For BV Mode II Scheme

Production of emergency loudspeakers in accordance with the relevant type approval certificates

Certificate Number SMS.W.II./48101/C.0

Bureau Veritas Marine Division - Rules for the Classification of Steel Ships

Bureau Veritas Marine Division, Rules for the Classification of Steel Ships

IEC 60065 – IEC 60068 – IEC 60945.
SPL IW/Im (db) 110
Effective Frequency Range (Hz) 310-8100

4.1 – When used for a public address or general system, loops and loudspeakers lay out are to be submitted for approval.
4.2 – To be installed in compliance with Regulations and Rules stated on front page of the Certificate.
4.3 – When used for an emergency alarm system the cables shall be of a fire-resistant type.
4.4 – Satisfactory performance tests shall be witnessed on each installation by the Society’s Surveyor after installation on board.

Bureau Veritas Marine Division
Certificate Number 11613/C0 BV


A product complies with essential requirements of the relevant European health, safety and environmental protection legislation, in practice by many of the so-called Product Directives.

Allows for free trade between member states including EFTA & European Union (EU) single market.

GOST RU C-NO.MJI02.B.00125

RU C-NO.MJI02.B.00125
Series Hazardous

Visit manufacturer’s website or contact manufacturer for details.

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.

Russian Fire Certificate С-№.ПБ34.В.00542

Russian Fire Certificate

Visit manufacturer’s website or contact manufacturer for details.

Product Features

  • Manufactured by DNH
  • Horn loudspeaker
  • 20 W
  • Polyamide / RAL 7035
  • M20 Cable diameter 5 – 12 mm
  • Brackets and all outside nuts are stainless steel
  • 70/100 Volt combined transformer:

Primary connections:

White : Green   70 Volt line

White : Red   100 Volt line

Secondary nominal tappings:

1 : 4   20.0 W

1 : 3   15.0 W

1 : 2   7.5 W

2 : 4   3.5 W

2 : 3   2.0 W

  • 8 ohm version available
  • IP-rating 67
  • Rated / maximum power 20 W / 25 W
  • SPL 1W/1m 110 dB
  • SPL rated power 122 dB
  • Effective frequency range 310 – 8000 Hz
  • Dispersion (-6dB) 1kHz / 4kHz 115° / 30°
  • Operating temperature -58°F to +302°F (-50°C to +150°C)
  • Order number: P-HP-20(T)
Contact Us

We're not around right now. But you can send us an email and we'll get back to you, asap.

Not readable? Change text. captcha txt

Start typing and press Enter to search products