The service was extended from Ipoh to Padang Besar via Butterworth, the mainland town opposite George Town, with the introduction of the ETS Transit on 10 July 2015, with stops at 24 stations.
At the inception of service, only one train service in both directions was introduced.
This service was given the name ETS Transit.

On the following day on 11 July 2015, a new service called the ETS Ekspres between KL Sentral and Padang Besar, via Butterworth was introduced, which only stops at 15 stations.
Again, only one service for both directions was introduced although, subsequently, on 1 September 2015, an additional service between KL Sentral and Butterworth was introduced.
New rolling stock, the Class 93 trains, were introduced in conjunction with the extended service.
The service was extended from Ipoh to Padang Besar via Butterworth, the mainland town opposite George Town, with the introduction of the ETS Transit on 10 July 2015, with stops at 24 stations. At the inception of service, only one train service in both directions was introduced. This service was given the name ETS Transit.
On the following day on 11 July 2015, a new service called the ETS Ekspres between KL Sentral and Padang Besar, via Butterworth was introduced, which only stops at 15 stations. Again, only one service for both directions was introduced although, subsequently, on 1 September 2015, an additional service between KL Sentral and Butterworth was introduced. New rolling stock, the Class 93 trains, were introduced in conjunction with the extended service.
KTM ETS