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Federal Signal Pulsator 451 Plus low-profile strobe combines advanced dome optics with a high-performance power supply to produce a brilliant flash that meets SAE Class 2 requirements. The Pulsator 451 Plus is exceptionally durable. The power supply is moisture and vibration resistant and protected against reverse polarity, voltage spikes and RFI. Heavy duty models provide a completely encased power supply to provide additional protection against vibration and moisture. These features make the Pulsator 451 Plus idea for forklifts, industrial and construction vehicles. The Pulsator 451 Plus has an operating voltage of 12/48 with an amp draw of 0.9A at 12V to 0.25A at 48V, operating at 8 Joules and 10.7 watts with 80 FPM.