Eaton’s Wheelock STH-15S loudspeaker is designed for sound projection and penetration for indoor and outdoor life safety and mass-notification applications. The weather-resistant construction and reentrant acoustic path ensure protection against water, humidity, vermin and corrosion.

Federal Signal’s 15W 110 series loudspeaker is used for industrial public address and general alarm applications. It is transformer-coupled to fine-tune the sound output and balance the audio load. Mounting is provided by a stainless-steel ratcheted mounting bracket that locks the sounder in position at a specific angle without slipping.