Spectracom Securesync 1204-32 PTP v2 Master Gigabit SFP Expansion Option Card

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Erbium Doped Fiber Amplifier DWDM EDFA 1550nm Gigabit 32 Channel With Board

Spectracom Securesync 1204-0A T1 E1 RS-485 Expansion Option Card 1.544 2.048 MHz