Used OEM  DeWALT DCF885 impact driver Switch Assembly N359999 fits the following models.

DCF885C2 Type 1 20V Impact Driver

DCF885L2 Type 1 20V Impact Driver

DCF885B (Type 1) 20v Impact Driver

DCF885B (Type 2) 20v Impact Driver

DCF885L1 (Type 5) 20v Comp Imp Driver

DCF885M2 (Type 2) 20v Impact Driver

DCF885B (Type 4) 20v Impact Driver

DCF885B (Type 5) 20v Impact Driver

DCF885B-B3 (Type 1) Impact Driver Power Tool

DCF885B-B3 (Type 2) Impact Driver Power Tool

DCF885C2 (Type 2) Impact Driver Power Tool

DCF885C2 (Type 5) Impact Driver Power Tool

DCF885M2 (Type 5) Impact Driver Power Tool