Sigcom's TMH Series signals are high output continuous duty tone signaling amplified speakers for industrial applications in hazardous areas. TMH Series signals draw extremely low power while producing clear tone reproduction up to 107 dBA. Each TM 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.