A Service Kit consists of a Trigger Board (115v or 230v) and a Triac (10A or 30A) configured for your particular control.
The 45U Trigger Board is used for 115 volt applications. NOTE: The 45U is the Universal 115v Trigger Board. It is a direct replacement for all previous 115v Trigger Boards including the 45M and TB45. It can be ordered separately or as part of a Service Kit.