The bus, carrying around 40 passengers, was travelling from the centrally-placed Bago province when it plunged off a highway near Myawaddy, a town on the Thai border.
The authorities say the modules have several commercial applications, including in wireless local area networks connecting printers and computers in office settings.
The national water agency is revising the current Licensed Water Service Plumber (LWSP) scheme to include sanitary plumbers in the Licensed Plumber scheme.