Shopping Cart (0) Quotes (0) Express Ordering All Categories > Strobe - Warning Lights > Strobe Lights > The 500/550 Series > Advanced Search Advanced Search in The 500/550 Series Unit of Measure Imperial Metric Both Specifications Lens Color * Amber Blue Clear Green Red Flashes per Minute (FPM) 60 DF 60 SF 65 SF 65 QF 70 SF Mounting Through Bolt Permanent (Standard) Flange Base Mount Magnetic Mount Through Bolt Permanent Mount 1/2" Pipe Mount Through Bolt Permanent UL Listed No YES Clear Cancel Advanced Search