The TK33 is a test kit for our popular multi-channel Model SDVX33 or SDVX3 Transfer Switch.  It provides a quick and convenient way of testing the basic switching functions of the SDVX33 and SDVX3.  It is especially useful in a routine scheduled communications system check-up.  The kit can be used either in the field or on the bench top.  The TK33 consists of, 
 

1   Relay Power Source (Model P202),

1   Type A Shorting Connector (TPA50),

1   Type C Shorting Connector (TPC50),

1   15 Pin D-Sub Straight Through Extension Cable,

1   A pair of Banana Plug to Alligator clip test leads, black and red,

1   Carrying case.

 
The Model P202 Relay Power Source provides a brief DC pulse to energize the relay coils in the Transfer Switches under test.  Two shorting plugs connect all relay contacts (switching channels) in series such that the overall continuity of either A/Set or B/Reset state can be verified with a conventional digital multi-meter (DMM).