This unit combines the functions of latch type and WTB-005 (momentary type) foot switches. Both of the unit’s foot switches may be set to function as either a latch or momentary type(Open, Close) switch. You can connect to gear equipped with TRS 1/4” (6.35mm) Phone jacks using a connection cable with stereo 1/4” (6.35mm) phone plugs at both ends. The NMP-2 uses 9V(Positive outside,Negative inside) 2.5mm plug to active Latch mode,open mode (also close mode with indicator). International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.