Moxa industrial 4 data line entry-level surge protector, RS422/485, 4 kV surge protection (extended temperature model)
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Moxa industrial 7 data line entry-level surge protector, RS232, 4 kV surge protection (extended temperature model)
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Moxa industrial 4 data line advanced surge protector, RS232, 20 kV surge protection (extended temperature model)
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