DTK-120SD 
                The DTK-120SD ‘Critical  Load’ surge protector from DITEK is a true multi-stage series hybrid  design which provides the best filtering and lowest clamp levels in its  class. A user replaceable fuse means less down time and longer service  life. Dry relay contacts enable remote notification of power outage or  suppressor function. 120V, 20A series connected surge protector with  dry contact relays.  | 
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