Model 9503 Network Switch system is 3-channel switch that is manually controlled via 3 knobs located on front panel. Channel 1 is DB25 switch with 7 positions, A/B/C/D/E/F; channel 2 is DB25 A/B switch; and Channel 3 is BNC switch with 2 positions, A and B. Multichannel system does not require any power and is packaged in 19 in. wide, 3.5 in. high rack-mounted unit.

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