Product details:

Federal Signal's Model 252 back-up alarm is a solid state audible warning device enclosed in a weatherproof housing. The housing is constructed of black glass-reinforced plastic and comes equipped with universal mountings for easy installation. When properly installed the unit is weather-proof dust-proof and not adversely affected by the steam cleaning of vehicles. This rugged device is polarity protected and will operate within a range of 12-48VDC. Model 252 is designed for use in a wide variety of vehicles that operate in populated areas - both indoors and out. This alarm is ideal for use on forklifts tractors waste disposal vehicles dump trucks earth moving equipment or any other vehicle that operates near people.