Shield?s 4? Speakers are designed for broadcasting high quality tone signals and are ideal for alarm signaling in hotels, malls, apartments and other areas where attractive appearance and dependable performance are prime concerns.

These 4? Speakers consist of a loudspeaker, 6 oz. magnet, a low profile constant voltage line matching transformer, a D.C. blocking capacitor and an all steel speaker baffle finished in an off white colour. The 25 and 70 volt transformers are of the matching type and include output power taps of ?, ?, 1 and 2 watt(s). Tap selection is made by wiring into the appropriate slot on the speaker?s terminal block. The Shield speakers install easily using the surface or flush backboxes.

These voice evacuation speakers are specially designed for high quality emergency fire alarm signals and voice communication. These units must be used with Shield?s SHX Voice Evacuation System or any voice alarm equipment approved by Underwriters Laboratories (UL).