Explosion proof electronic replacement for inefficient electro-mechanical sounders

The HOOTRONIC sounder electronically creates traditional warning sounds such as a bell, siren, hooter or buzzer.

While widely used for more than 100 years, the reliability, performance, maintenance and running costs of electro-mechanical devices has always been a concern. Using the latest in SMD class D amplifier technology and digital to analogue conversion, the Hootronic faithfully replicates, user-selectable from one product, all these sounds with the reliability, performance and functionality of a modern electronic sounder.

Three stages are provided, enabling a further two remotely selectable sounds to be configured for each primary sound if required. Sample audio clips of each sound can be played from the E2S web site,

With output levels of up to 117.5dB at 1 metre, the Hootronic surpasses the performance and effectiveness of the outdated electro-mechanical device it replaces. A volume control enables the output to be matched to the operating environment. It is continuously rated, operates from 24VDC, 115 or 230VAC, the inrush start-up and operating current consumption is low, it requires no maintenance and is sealed to IP66/67. A very large termination area aids installation and gives room for multiple cables if required.



  • ATEX approved for use in Zones 1, 2, 21 and 22
  • Type BExH120D (for zone 1 & 2)
  • Type BExDH120D (for zone 21 & 22)
  • Nominal output : 117.5dB(A) @ 1m +/- 3dB - Tone 4
  • 5 alarm sounds
  • 3 stage alarm
  • Volume control
  • 200m effective range @ 1kHz
  • Voltages : 24vdc; 115vac; 230va
  • Negative or positive remote switching
  • Ingress Protection: IP67

Technical information