I think its a type MT not MTA.
whole assemblies - 1 switch 7656C51H01
2 switch 7656C51HO2
housing 3-40328-68
button 3-40328-69
led-lens 3-40328-70
board 1 switch 3-40341-30
2 switch 3-40341-32
switch 3-40341-35
led 3-40341-34
o-ring 3-40359-01