[revealer]

Most LED require re-wiring to bypass the existing ballast inside fluorescent fittings.  If the fitting has an electromagnetic ballast and not an electronic ballast,  you can buy Phillips Ecofit tt can replace fluorescent directly by just replacing the starter tt come with the purchase without doing any re-wiring. There r other type tt can replace fluorescent tube directly without any modification but not seem to b available online.

https://s.lazada.sg/s.X1yKO