- Manufacturers of STS certified utility-meters and vending systems.
- Manufacturers of STS certified Secure Modules.
- Companies who market STS certified meters and vending systems under their own brand.
- Anyone wanting to make use of the STS companion specifications and simulation tools.
The members of the association are companies and utilities involved in the manufacture, supply or operation of STS based systems. Membership can be obtained by signing our membership agreement and paying the prescribed joining and annual membership fees.