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STS Prepayment Smart Meters Manufacturer.

High-performance smart metering infrastructure for global utility networks and sustainable energy grids.

Product
Narrative

Technical Innovation & Quality Heritage

YTL’s STS Prepayment Smart Meters are the global standard for secure revenue protection. Built according to the Standard Transfer Specification (STS), these meters use a highly secure 20-digit token system for credit loading. As a specialized manufacturer, Zhejiang Yongtailong has deployed millions of these units to utilities worldwide to combat non-technical losses and improve cash flow. These smart meters feature integrated magnetic latching relays that automatically disconnect power when credit is exhausted. With advanced anti-tamper features and support for various communication modules (PLC, RF, or Cellular), our STS meters provide a flexible and reliable "pay-as-you-go" solution that empowers consumers to manage their electricity budgets while ensuring utilities get paid upfront for the energy they provide.

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Technical Datasheet

Technical CategorySTS Smart Meter Specs
StandardSTS (IEC 62055-41, 51) Compliant
Token Type20-digit Numeric Token (Keypad or Remote)
AccuracyClass 1.0 (IEC 62053-21)
Current Rating5(60)A, 5(80)A, 10(100)A
ProtectionIP54 with reinforced anti-tamper casing

Product Application

  • National Utility Revenue Recovery
  • Social Housing Projects
  • Rural Electrification Programs

National Utility Revenue Recovery

The primary tool for national utilities to eliminate debt and ensure 100% payment collection. By switching from post-paid to STS-prepaid smart meters, utilities can collect revenue before the energy is consumed. The 20-digit token system is universally compatible with various vending platforms, including mobile money, ATMs, and local shops, making it easy for citizens to stay powered up while the utility stabilizes its financial operations.

Social Housing Projects

Ideal for government-managed housing where budget control for low-income families is vital. These meters provide clear, real-time feedback on the LCD about remaining credit and current usage rates. The STS system allows the housing authority to set "emergency credit" or "friendly hours" (no disconnection at night) to ensure a balance between revenue collection and social responsibility.

Rural Electrification Programs

Specifically built for new grid connections in remote areas. Because STS tokens can be generated and sent via simple SMS, no internet connection is required at the meter site for recharging. This makes it the perfect solution for solar mini-grids or remote utility extensions where traditional billing infrastructure like mail or meter readers is logistically impossible.

Product Advantages

Global STS Compatibility

Fully compliant with the international STS standard, allowing these meters to work with any certified vending system, giving utilities complete freedom in software choice.

Advanced Fraud Protection

Utilizes sophisticated encryption so that each 20-digit token can only be used once on a specific meter, making it impossible for tokens to be forged or stolen.

Multi-Tariff Support

Supports complex Time-of-Use (TOU) pricing, allowing utilities to charge different rates for peak and off-peak energy, even in a prepaid environment.

Frequently Asked Questions

  • Q: What happens if a user loses their token?

    A: The vending system keeps a record of every token issued to a specific meter serial number. The user can simply request a reprint or a resent SMS of the same 20-digit code.

  • Q: Can the meter detect magnetic tampering?

    A: Yes, our STS smart meters are equipped with hall-effect sensors that detect strong external magnets and automatically trip the relay to prevent theft.

  • Q: Does the meter work with a 3rd party vending app?

    A: As long as the app is STS-compliant and has your utility's specific Security Module (SGC), it can generate valid tokens for our meters.

  • Q: What is "Emergency Credit"?

    A: It is a small amount of credit a user can activate via the keypad when their balance reaches zero, giving them enough power to reach a vending point to buy a new token.

  • Q: Is there a 3-phase version of the STS meter?

    A: Yes, Zhejiang Yongtailong manufactures both single-phase and three-phase STS meters to suit residential and light industrial prepaid applications.

Welcome To A National High-tech Enterprise

Established in 2000, Zhejiang Yongtailong Electronic Co., Ltd. is located in Tongxiang. As a professional STS Prepayment Smart Meters manufacturers and STS Prepayment Smart Meters suppliers in China , YTL designs and produces electronic energy meters which are cost-efficient and ideal for the use in solutions for AMR/AMI at residential as well as industrial applications.YTL was one of the first companies in the domestic market with which had an internal R&D department as well as international sales business. Since our foundation in 2000 we have grown to a manufacturer which complies and meet to many specifications from our national and international partners. At present our export volume makes us a leading company for technology and product export to more than 60 countries throughout the world.YTL is devoted to develop and design all types of electronic energy meters, concentrators and solution applications. With a combined design of the special accessories, we have successfully developed series of competitive products of small size, multifunction, low power consumption and excellent performance. We offer a one-to-one service to our partners. With annually over 68 projects that are successfully finished and holding over 500 patents of design rights, we are also advanced in the technology and patents of current sampling.

  • 2000

    Established In

  • 500+

    Employees

  • 60+

    Export
    Countries

  • 500+

    Patent

  • 10million+

    sets per year

YTL Honor

  • MID
  • KEMA
  • DLMS
  • IEC
  • KEMA
  • SGS

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