Electro Standards Laboratories Seismic-Proof DB9 A/B Switch Model M4503

Switches all 9 pins of connector interface simultaneously Ruggedized to withstand vibrations Switch and options have passed rigorous seismic testing This M4503 AB switch is ideal for power plant applications Rugged all-aluminum enclosure provides EMI/RFI resistance in noisy environments Optional "pass-key only" access ensures proper authorized usage (Catalog No. 304503-Opt-1) Optional "mounting ears" allow firm attachment (Model No. 2959, Catalog No. 512959). Optional accessory "feed-through" connector (Catalog No. 513904, DB-9 F/F Adaptor Plate.) Manual data network switch, no power required Lifetime guarantee!