The Precco Safety Bac-A-Larm Model 45A Back Up Alarm is a new old stock product designed to provide safety and security for commercial trucks. With the manufacturer part number 45A, this alarm is a reliable and high-quality option for ensuring the safety of your vehicle and cargo. The Precco Safety brand is known for producing durable and reliable commercial truck parts, making this back-up alarm a dependable choice for any business owner or driver looking to enhance their vehicle's safety features.