MT-SPIMS Integrated Meter
The Unbranded MT-SPIMS STS Meter provides reliable electricity measurement and prepayment management for residential and light commercial applications. This hardware adheres to the Standard Transfer Specification (STS) protocol to ensure secure and interoperable token transactions. It measures active energy consumption with Class 1.0 accuracy according to IEC 62053-21 standards. The integrated keypad allows users to input 20-digit encrypted tokens manually for credit top-ups. Internal relays manage the load connection based on available credit levels. This unit supports a wide voltage range from 160V to 280V to handle grid fluctuations. It operates effectively in environments with high humidity and varying temperatures. Engineers often specify this model for its comprehensive anti-tamper suite. The system detects bypass attempts and unauthorized opening of the terminal cover. It logs these events for utility inspection and forensic analysis. The LCD panel provides real-time data including voltage, current, and total energy consumed. This transparency helps resolve billing disputes between tenants and landlords.
Key Features
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STS Protocol Compliance
The device uses the IEC 62055-41 open standard to support secure encrypted token transfer from any STS-compliant vending system. -
Advanced Anti-Tamper Mechanisms
- Detects terminal cover removal while powered or unpowered
- Identifies magnetic interference aimed at disrupting internal measurement
- Automatically disconnects the load upon detection of unauthorized access
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Load Management Control
Users can program power limits to prevent circuit overloads and protect local grid infrastructure from excessive demand spikes. -
Environmental Resilience
The polycarbonate enclosure features an IP54 rating to prevent dust ingress and protect against water splashes in outdoor cabinets.
Specifications
| Feature | Specification |
|---|---|
| Nominal Voltage | 230V AC |
| Current Range | 5(60)A or 10(80)A |
| Accuracy Class | Class 1.0 (IEC 62053-21) |
| Protocol | STS (Standard Transfer Specification) |
| Frequency | 50Hz / 60Hz |
| Surge Protection | Up to 4kV |
| Protection Rating | IP54 |
| Display Type | LCD with Backlight |
What’s in the Box
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Unbranded MT-SPIMS Integrated Metering Unit
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Terminal Cover with Sealing Screws
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Installation and Wiring Guide
Why Choose MT-SPIMS
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The single-phase measurement tool maintains high precision even in unstable grid environments with frequent voltage dips.
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This prepaid electricity controller stores historical consumption data for up to twelve months for comprehensive energy auditing.
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The STS-certified hardware simplifies the deployment of independent power networks by utilizing universal vending infrastructure.
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An internal battery ensures the digital energy monitor remains functional for credit checks during total power outages.

Evans Omolo (verified owner) –
I bought five of these for my new rental units in Ruaka. The STS integration is seamless and it makes managing power much easier since I don’t have to keep following up with tenants about their bills. The build quality of the MT-SPIMS is surprisingly sturdy for an unbranded unit. It fits perfectly in the standard meter boxes and the token entry is very responsive. Highly recommended for any landlord looking for a reliable sub-metering solution.
Mercy Wanjiku (verified owner) –
The meter is working well so far. My fundi installed it quickly without any complications. It’s a solid single-phase unit and the display is clear enough. Only giving 4 stars because the manual was a bit brief, but once you figure out the wiring, it’s straightforward.
Juma Bakari (verified owner) –
Delivery to Mombasa was fast and the item arrived in good condition. It’s a simple, no-nonsense meter that does exactly what it says on the box.
Patrick Muriithi (verified owner) –
Good value for money compared to the branded versions. Using it for a small shop extension and the STS protocol works perfectly with the keypad. It’s compact and the terminals feel secure. No issues with reading the units accurately.
Brenda Akoth (verified owner) –
It does the job for the price. The screen is a bit small if you mount it in a dark hallway, but the token system hasn’t failed me yet. Decent for domestic use.