Features of Whelen LED LIN3 Surface Mount Lighthead 3 Generation III LEDs with Linear Optics. Standard Mode: 10 Scan-Lock Flash Patterns plus Steady Burn. Sync Mode: 7 Scan-Lock Flash Patterns each with Phase 1 and Phase 2. Four Wire Synchronizable Version. Fully encapsulated for vibration, moisture and corrosion resistance. Black Surface Mount Flange Included Standard. Designed for Horizontal Mounting. Dimensions: 3-5/8" W x 1-5/16" H x 1-5/16" D. LIN3 Whelen LED’s Emergency Vehicle Lights are Encapsulated, low current and tough as nails so they’ll go to work for you anywhere on your vehicle, shrugging off moisture and road vibration. Perfect for mounting in the grill, on side mirrors, on bumpers, over steps, on motorcycle boxes and fairing, on ATV’s, forklifts and material-handling vehicles ... Wherever high intensity, wide angle warning is required. Highly effective LIN3 Super-LED surface mount Police Light module with black ABS mounting flange. Optional chrome ABS mounting flange available. Tiny size, dozens of applications Super-LED tough, low current, vibration and moisture resistant. Available in steady-burn, 15 ScanLock patterns, 10 ScanLock patterns and synchronization capability Available in all four safety colors. Five year warranty.