Stay away. Stay safe. Use J.W. Speaker distinctive safety warning alarms to alert people near maintenance vehicles and material handling equipment to steer clear of danger. A backup safety alarm delivers a loud audible warning to others when vehicles are on the move. Pair these alarms with LED work lights and LED safety lights for the ultimate in on-the-job protection. Designed, manufactured and assembled in the USA, our collection of back up alarms is built tough and durable to withstand the rigors of any industrial jobsite.