The Standard Speaker Back-Up Alarms are designed to provide durability and reliability in any job site environment. Encapsulated in epoxy, these alarms can withstand steam cleaning and pressure washing, ensuring longevity. The reduced epoxy design aids in heat dissipation, keeping the alarm cooler and extending its lifespan. With a reverse polarity system and high impact, glass-filled nylon construction, these alarms meet industry standards and flame tests. The compact design and industry-standard bolt mounting pattern allow for easy installation and replacement, even in tight spaces. Manufactured with a polyethylimide speaker cone, these alarms can withstand extreme temperatures. Available in 87 or 97 decibels, these alarms also feature a self-adjusting option that automatically adjusts the output sound level based on ambient noise.