Hoymiles HMeter-CT-S120-RW SINGLE-PHASE SMART METER with CT

The Hoymiles HMeter-CT-S120-RW Smart Meter provides accurate, real-time monitoring of energy flow within a single-phase home, helping compatible Hoymiles solar and battery systems intelligently respond to household consumption and grid import/export.

Supplied with a 120A current transformer (CT), the meter monitors the flow of electricity at the property's grid connection, giving the Hoymiles energy management system the information it needs to optimise how solar generation and stored energy are used.

Why Use the Hoymiles Smart Meter?

When paired with a compatible Hoymiles system, the HMeter allows the system to understand whether the property is importing electricity from the grid or exporting surplus energy.

This enables smarter energy management and helps maximise the amount of solar energy used within the home rather than unnecessarily importing or exporting electricity.

Key Features

• Designed for single-phase residential installations

• Measures current from 0–120A

• Supplied with 120A current transformer (CT)

• High-accuracy real-time power monitoring

• Supports WLAN and RS-485 communication

• Modbus TCP and Modbus RTU support

• Wi-Fi 802.11 b/g/n

• Bluetooth BLE 5.0

• Compact 1-module / 19mm wide design

• Simple DIN-35 rail mounting

• Plug-and-play CT connection

• Low 2W power consumption

• Operating temperature from -40°C to +70°C

Compact & Installer Friendly

At only 19mm wide, the HMeter takes up minimal space within the consumer unit or electrical enclosure.

DIN-rail mounting and a plug-and-play CT connection make installation straightforward, while the external CT allows current measurement without routing the property's full load through the meter itself.

Accurate Energy Monitoring

The HMeter provides accurate measurement of key electrical parameters including:

• Active power

• Reactive power

• Current

• Voltage

• Frequency

• Power factor

Active power measurement conforms to IEC 62053-21 Class 1, providing the accurate energy data required for intelligent solar and battery management.

Designed for the Hoymiles Energy Ecosystem

The HMeter-CT-S120-RW is designed for use with selected Hoymiles HiBattery, HiFlow and HiFlow Pro products.

When connected to a compatible Hoymiles system, it enables the system to monitor household energy flow and make smarter decisions about when solar energy should be consumed, stored or exported.

Technical Specifications

Please note: This is the single-phase HMeter-CT-S120-RW. For three-phase installations, use the Hoymiles HMeter-CT-T120-RW.

Need help confirming compatibility with your Hoymiles system? Contact the Electricals Online renewables team and we'll help you select the correct meter and accessories.