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Black Box IC1157A Async RS232 to 5V TTL Interface Converter - DB9 to DB9 - AV Accessory from Black Box.
Convert 5-V TTL to RS232 to enable easy connection to a laptop or computer. These converters work in any application where commercial and industrial machines still use TTL as a means of communication in factory automation, building automation.
Black Box is a global IT infrastructure maker known for enterprise-grade network cabling, fiber, KVM switching and extension, AV distribution, rack and power products backed by its own engineering and support. Manufacturer part number: IC1157A.
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