Buyers Products Crush-Resistant Strobe Light Set features two multi-directional strobes. Patented gyroscopic technology automatically turns the strobes on when in a horizontal position and off when vertical, making them ideal for lift gates, ramps, tailgates, and other similar applications. Their durable stainless steel construction protects them from forklifts and other common ground-level impacts. The automatic on/off function can be bypassed for traditional strobe uses, like marking the corners of dump trucks, bumpers, outriggers, or service bodies. The lights must be wired to an auxiliary switch (sold separately, see "Accessories" below) to be manually actuated for these applications. The strobes can be wired for synchronous or alternating patterns and feature a 35 ft cable. The kit includes stainless steel mounting hardware, 6 extra wiring grommets, a rubber gasket, and backing plates for each light. The lights are backed by a 5 year warranty.