The one I used is a SG/Singapore edition, made in Indonesia.
Due the similiarity of the style of programming Casio cash registers, some of the aspects of programming the SE-S300 perharps can be used on other models in the TE-300 family (SE-C300, SE-S2000, SE-C2000, etc) and other Casio cash register models.
As always, refer to the manual of each model for more clarification.