Buyers Products Compact-Style Dump Body-Up Indicator mounts to the back frame of your vehicle to notify you when the dump body is raised, increasing alertness while working. It is designed to reduce the chance of overhead collisions with raised dump bodies. Waterproof and IP68 rated, this indicator can perform in the most extreme temps: -40 F° to 185 F°. The indicator has a 304 stainless steel housing for the ultimate in corrosion resistance. It is ideal for use with Buyers Products BL10 Buzzer Light.