Feature: 1. Super Visibility: Brighter and more effective than standard LED strobe lights. In rain, fog and snow, you can easily see the bright yellow light. 2. High Frequency Flash: Automatic stroboscopic when power on, the frequency of stroboscopic is about 90 times per minute. 3. Feature: Need to distinguish between positive and negative, red connect to positive, black connect to negative. 4. Material: ABS flame retardant material is used, high temperature resistance, corrosion resistance, not easy to deform. 5. Wide Application: Suitable for security guard booths, gates, road tunnels, airports, construction sites, etc. as warning lights. Specification: Item Type: Warning Flashing Light Material: ABS Model: 05 Color: Yellow Uses: For Security Guard Booths, Gates, Road Tunnels, Airports, Construction Sites, Etc. Strobe Frequency: About 90 Times/Minute. Package List: 1 x Warning Flashing Light 2 x Base Plates1 x Double Sided Stickers4 x Screws2 x Expansion Tubes