The North American 500/550 Series Strobe Warning Light is a combination of the ability to withstand any wear or pressure. It is designed with a rubber base which is shock-resistant, a Fresnel lens made of polycarbonate, an enclosed circuitry, and a linear strobe bulb.
This 500/550 series strobe warning light operates at 12/24V to 220V AC and a rated current of 0.1 to 0.8 amperes. It features a single, double or quad flash display. It includes an option of permanent, pipe, or magnetic mount. The pipe mount includes a 1/4-inch thick round plate with 1/2-inch hole while the magnetic mount comes with a 90-lb magnet, 15-inch coiled cord, cigarette plug with a built-in on/off switch. All units are available in amber, blue, clear, green and red lens color.
In addition, models ST500-ACXA, ST500P-ACA, ST500-AC2A, and ST500P-AC2A are UL Listed to applicable standards and requirements by UL which means representative samples of this product have been evaluated by UL and meet applicable safety standards.
Configuration Options
The North American 500/550 Series Strobe Warning Light is available in 18 models with different operating voltage, rated current, flashes per minute, light output, mounting, lens color, and UL certification. Please select your preference from the drop-down menu above.
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ST500-A: 12/24V, Single Flash, w/ Permanent Mount
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ST500P-A: 12/24V, Single Flash, w/ Permanent Mount
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ST500M-A: 12/24V, Single Flash, w/ Magnetic Mount
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ST500-ACA: UL Listed, 120V AC, Single Flash, w/ Permanent Mount
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ST500P-ACA: UL Listed, 120V AC, Single Flash, w/ Pipe Mount
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ST500-AC2A: UL Listed, 220V AC, Single Flash, w/ Permanent Mount
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ST500P-AC2A: UL Listed, 220V AC, Single Flash, w/ Pipe Mount
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ST550-A: 12/48V, Single Flash, w/ Permanent Mount
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ST550P-A: 12/48V, Single Flash, w/ Pipe Mount
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ST550M-A: 12/48V, Single Flash, w/ Magnetic Mount
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DFS550-A: 12/48V, Double Flash, w/ Pipe Mount
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DFS550P-A: 12/48V, Double Flash, w/ Pipe Mount
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DFS550M-A: 12/48V, Double Flash, w/ Magnetic Mount
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Q550-A: 12/48V, Quad Flash, w/ Permanent Mount
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Q550P-A: 12/48V, Quad Flash, w/ Pipe Mount
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Q550M-A: 12/48V, Quad Flash, w/ Magnetic Mount
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ST560-A: 12/24V AC/DC, Single Flash, w/ Permanent Mount
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ST560P-A: 12/24V AC/DC, Single Flash, w/ Pipe Mount
Item Number
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ST500-A
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ST500-ACA
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ST500-AC2A
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ST550-A
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DFS550-A
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Q550-A
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ST560-A
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Operating Voltage
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12/24V
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120V AC
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220V AC
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12/48V
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12/48V
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12/48V
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12/24V AC/DC
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Rated Current (Amperes)
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0.3
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0.2
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0.1
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0.5
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0.75
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0.8
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0.3
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Flashes per Minute (FPM)
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65 Single Flash
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70 Single Flash
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70 Single Flash
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60 Single Flash
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60 Double Flash
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65 Quad Flash
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65 Single Flash
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Light Output (Candelas/Second)
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250
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150
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150
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250
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300
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400
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250
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Joule Rating
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2.75
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2
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2
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2.5
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4.75
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5.25
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2.75
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Mounting Option
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Permanent, Pipe & Magnetic
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Permanent & Pipe
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Permanent & Pipe
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Permanent, Pipe & Magnetic
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Permanent, Pipe & Magnetic
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Permanent, Pipe & Magnetic
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Permanent & Pipe
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UL Certification
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No
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Yes
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Yes
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No
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No
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No
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No
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