Electrical Measurement & Monitoring · Smart Prepaid Meters
RTX-SPEM Smart Prepaid Energy Meters
RTX-SPEM combines prepaid energy metering with Bluetooth, 4G or NB-IoT communication options for single-phase 220V and three-phase 220/380V systems.
Bluetooth / 4G / NB-IoTCommunication
220V, 50HzSingle Phase
220/380VThree Phase
4Meter Families
Overview
RTX-SPEM is structured as four public meter families covering a standard-form Bluetooth meter, a 35mm DIN-rail Bluetooth meter, and 4G / NB-IoT single-phase and three-phase meters. Public RTX codes replace supplier model codes while keeping the documented electrical options unchanged.
Prepaid payment, account management and remote monitoring depend on the selected meter, communications network and external software platform. Those system functions should be confirmed as part of the complete solution.
Key Features
- Prepaid active-energy measurement
- Bluetooth, 4G or NB-IoT communication options by family
- Single-phase 220V and three-phase 220/380V variants
- Optional RS485, time-of-use and tiered-tariff functions on listed 4G configurations
- 35mm DIN-rail mounting and <2W / 5VA consumption listed for the Bluetooth DIN-rail family
Available Models
Current ranges differ by platform. A blank frequency or accuracy field means the supplier table did not state that value for the corresponding three-phase row.
| RITOKS Family | Phase / Mounting | Voltage | Current Options | Accuracy / Frequency |
|---|---|---|---|---|
| RTX-SPEM-BT | Single phase, standard form | 220V | 5(60)A, 10(40)A, 15(60)A, 20(80)A, 30(100)A | Class 1 / 50Hz |
| RTX-SPEM-BTD | Single phase, 35mm DIN rail | 220V | 5(30)A, 10(40)A, 15(60)A, 20(80)A | Class 1 / 50Hz |
| RTX-SPEM-4G1 | Single phase, 4G or NB-IoT | 220V | 5(60)A, 10(40)A, 15(60)A, 20(80)A, 30(100)A | Class 1 / 50Hz |
| RTX-SPEM-4G3 | Three phase, 4G or NB-IoT | 220/380V | 1.5(6)A, 5(60)A, 5(80)A | Not stated in source table |
Technical Specifications
| Measurement | Active energy with prepaid function |
|---|---|
| Communication | Bluetooth, 4G or NB-IoT by model; RS485 optional on listed 4G configurations |
| Single-Phase Voltage / Frequency | 220V / 50Hz |
| Three-Phase Voltage | 220/380V |
| Bluetooth DIN-Rail Mounting | 35mm DIN rail |
| Bluetooth DIN-Rail Consumption | <2W / 5VA |
| Optional Functions | Time-of-use tariff, tiered tariff, current / voltage / power display on listed 4G configurations |
Applications
Choose the meter by phase system, communication method and prepaid-management workflow. The AI-generated image illustrates a typical multi-tenant smart metering cabinet.
Residential and Tenant Metering
Prepaid energy allocation for apartments, rental units and managed residential circuits.
Commercial Submetering
Distributed metering for shops, offices and other separately managed electrical loads.
Remote Energy Management
Bluetooth for local access or 4G / NB-IoT variants for wide-area monitoring and prepaid operations.
Selection Notes
- Confirm single-phase 220V or three-phase 220/380V system requirements.
- Select Bluetooth, 4G or NB-IoT according to range, coverage and platform needs.
- Match the basic and maximum current values to the metering circuit.
- Confirm whether RS485, time-of-use, tiered tariff or electrical-value display is required.
- Request the protocol, platform interface, wiring diagram and model-specific compliance documents before approval.
Frequently Asked Questions
Which communication options are available?
The documented family includes Bluetooth and 4G or NB-IoT options. Communication method is model-dependent.
Is a DIN-rail version available?
Yes. RTX-SPEM-BTD is the documented single-phase Bluetooth family with 35mm DIN-rail mounting.
Are RS485 and tariff functions standard?
No. The supplier table lists RS485, time-of-use and tiered-tariff functions as optional on the 4G smart-meter configurations.
Does the meter include a complete payment platform?
The meter supports prepaid functions, but payment and remote-management workflows depend on the selected communications and external platform integration.
Related Products
Published DIN-rail meters for adjacent single-phase, three-phase and communications-based metering requirements.
Request a Quote
Provide phase and voltage, required Bluetooth / 4G / NB-IoT communication, prepaid-management requirements, current configuration, quantity and destination.