Knowledge Search
Download document () of 20
Clear selection
Download selection
We make what matters work*
Submit form in new Tab
Digital
Services
Markets
170961867
Industry-first collaboration
Learn how we’ve joined forces with Siemens Energy to fast-track data center construction and reduce deployment timelines by up to two years.
Support
1010067800
Part number search >
Search for catalog numbers
Company
Eaton Experience Center Shanghai, China
Explore our Global Experience Locations
MyEaton
Bells & chimes

FHF dGW21 Explosion Proof Alarm Bell Range

Eaton’s FHF dGW21 alarm bell range is designed for reliable signaling in hazardous and potentially explosive areas, including ATEX zones 1 and 2. Ideal for oil, gas, petrochemical, and industrial environments.

The dGW21 housing is made from UV-stable, glass-reinforced polyester (GRP), ensuring corrosion resistance and durability in harsh conditions. This explosion proof alarm bell meets weatherproof Type 4X/IP66 ratings for maximum protection.

Delivering a powerful sound level of approx. 105 dB(A) at 1 meter, the dGW21 is available for all common supply voltages. All DC variants feature an electronic contact breaker for extended life cycle and superior performance compared to conventional solutions.

Contact me about this product
Download complete specs (English) Download complete specs (German)

Looking for Eaton's Signaling company information?

Visit our hazardous and industrial signaling resource library to find all related documentation from company certificates, sounder tones, channel partners and much more.

Resource Library Portfolio
Globally certified
Meets ATEX IECEx and UL standards
Compact design
Quick installation and space-saving
Proven durability
Glass reinforced polyester housing

Design features - robust alarm bell for harsh conditions

  • Precision GRP (glass-reinforced polyester) housing includes the junction box with ½”NPT conduit entries and is resistant to acids, seawater, alkali, and moisture.
  • Weatherproof Type 4X / IP66 environmental ratings.
  • Volume - Approx. 105 dB (A).
  • Ringing emphasis at 1000Hz stands out clearly against low-frequency ambient and machinery noises.
  • Fully encapsulated / sealed electronics provide unparalleled resistance to chemicals and moisture in harsh environments.
  • 316 stainless steel mounting brackets included.
  • Captive terminal box screws prevent their loss during installation.
  • Version available with an integrated telephone call relay.
  • DC versions are equipped with an electronic contact breaker, increasing the service life when compared with other products.
  • Blocking diode allows installation on fire alarm notification appliance circuits 

Standard materials for our explosion proof alarm bell

  • Housing: GRP (Glass reinforced polyester) 
  • Brackets: 316 stainless steel 
Specifications

Ordering Requirements dGW21 - EN

dsfh0101-en-fhf-dgw21-bell-config-options .png

Ordering Requirements dGW21 - DE

dsfh0101-de-fhf-dgw21-bell-config-options .png
Download Links
Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.
Company
Quick links
© 2025 Eaton. All Rights Reserved.