BExDH120D Hazardous Area Hootronic Electronic Horn



The flameproof BExH120 Hootronic Siren is suitable for Zone 1, 2, 21 & 22 applications. Approved to IECEx, ATEX, Ex EAC and INMETRO standards. The BExH120 authentically reproduces the traditional sounds of electro-mechanical devices whilst providing a significantly higher level of performance and reliability.

The E2S Hootronic series of products faithfully reproduce the sounds made by legacy electro-mechanical signalling devices but in a modern, reliable and cost effective way. With output levels of up to 117.5dB(A) at 1 metre the BExH120 surpasses legacy electro-mechanical devices in performance and effectiveness, it is also continuously rated, requires zero maintenance and the signal quality will not degrade with age.


  • Hootronic sounder up to 117dB
  • Ex d IIC zone 1, 2, 21 and 22 (IECEx)
  • Marine grade, corrosion proof, LM6 aluminium enclosure with Stainless steel fixings
  • Authentic reproduction of the sound of electromechanical signaling devices
  • 5 tones
  • Automatic synchronization on multi-sounder systems*
  • Volume control
  • Three stage alarm
  • Ingress protection IP66/67


Sound output: Max 117dB @ 1m

Sound frequency: 5 tones see tone list

Protection: IP66 (IP67)

Temp rating (°C): T4 -50 to +55°C

Duty: continuous

Cable entry: 2 x M20 ISO (one stopping plug included)

Construction: LM6 aluminium housing, stainless steel guard and mounting bracket

Weight: DC- 3.20kg, AC – 3.40kg

Approval: II 2G Ex d IIC T4 (max ambient temperature +55°C)

II 2G Ex d IIB T4 (max ambient temperature +70°C)

II 2D Ex tD A21 IP67 T115 (DIP)

Certificate: IECEx (KEM 10.0003)


* Synchronization requires sounders to be connected

to the same supply


For more detailed specifications, please click here