Hazardous Area Tone Signal

TMH Series Hazardous Area Tone Signaling Amplified Speakers

TMH Series signals are high output continuous duty tone signaling amplified speakers for industrial signaling and fire alarm applica­tions in hazardous areas. TMH Series signals draw extremely low power while producing clear tone repro­duction up to 107 dBA. Each TMH Series signal features a rugged speaker cone and a projector built with spun aluminum. The amplification, power management, tone selection, and other internal circuitry are built into a rugged die cast aluminum housing which is sealed with powder coat paint and includes dust and moisture proof gaskets.


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TMH Series is approved for indoor and outdoor use and suitable for NEC Class I, Division 2, Groups A, B, C, and D; Class II, Division 2, Groups F and G; and Class III hazardous areas. Typical applications for TMH Series include fire alarm systems, emergency warning, plant evacuation, pro­cess control, and public address signaling.


  • Designed for industrial signaling in hazardous areas including
    •  Emergency warning
    • Process control
    • Plant evacuation
    • Public address
    • Emergency Communication Systems (ECS)
  • UL Listed for fire alarm signaling
  • Digital signal amplification
  • Configurable for 11 different tones including siren, whoop, HiLo, temporal 1K, and yelp – no additional modules needed
  • High audio output with extremely low current draw
  • UL Listed for indoor and outdoor use
  • Suitable for areas with high ambient noise
  • User selectable audio line level 25 or 70 Vrms – no additional modules needed
  • Available for 24 VDC and 120 VAC; red or grey powder coat finish