A payment meter (also known as a pre-payment meter) is a device that accepts credit and management tokens from an STS Vending or management system and acts accordingly depending on the token.

1. Credit token – the payment meter updates its credit register with the amount contained in the token and dispenses a utility until the credit is depleted

2. Keychange tokens – the payment meter will change its key and possibly other parameters according to the contents of the keychange tokens

3. Management tokens – these tokens allow certain meter parameters (such as maximum power limit, tamper reset etc)
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The STS supports the following meter types:
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1. Electricity (kwh)

2. Electricity currency

3. Water (cubic meters)

4. Water currency

5. Gas (cubic meters)

6. Gas currency

7. Time (minutes)

8. Time curre