hdlc
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Sealevel Systems Inc.
SEALEVEL SYSTEMS RS-232, RS-422, RS-485, USB to serial, Ethernet to serial, Serial I/O, Async, Sync, Digital I/O, PCI, ISA, PCMCIA, USB, Compact PCI, PC/104, Ethernet
Sealevel Systems provides serial and digital I/O solutions including RS-232, RS-422, and RS-485 PCI, Low Profile/Universal Bus PCI, PC/104, PCMCIA, USB, and Ethernet serial products. Digital I/O products include PCI, PC/104, USB, Ethernet (Modbus/TCP), RS-485/RS-232 (Modbus/RTU) and PCMCIA cards. All I/O products are backed by a Lifetime Warranty and excellent technical support.
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