VE-EM2121-DT
Tuya / Wi-Fi
Single-Phase Direct Energy Meter
80 A direct · Tuya / Wi-Fi · Built-in relay
VoltEdge Energy Metering Range
Energy measurement
built for connected
electrical systems.
Four VoltEdge meters cover direct, CT-operated and panel-mounted measurement architectures, with Tuya and RS485 connectivity available according to model.
Energy Metering Solutions
VoltEdge Energy Metering
Range
Each product page brings together key specifications, connectivity details and technical downloads.
VE-EM2121-DT
VE-EM4321-DT-BI
Tuya / Wi-Fi + RS485 + Modbus RTU
Three-Phase Direct Energy Meter
100 A direct · Tuya / Wi-Fi · RS485 Modbus RTU
VE-EM4321-CT-BI
Tuya / Wi-Fi + RS485 + Modbus RTU
Three-Phase Indirect Energy Meter
CT operated · Tuya / Wi-Fi · RS485 Modbus RTU
VE-PM5110
RS485 + Modbus RTU
96 × 96 mm Three-Phase Multifunction Power Meter
96 × 96 mm · External CT · RS485 Modbus RTU
Metering architecture
Direct, indirect and panel metering
Select the architecture according to how current is measured and how the meter is integrated into the electrical system.
01
Direct metering
VE-EM2121-DT and VE-EM4321-DT-BI route the measured current directly through the meter within their specified current ratings.
02
CT-operated metering
VE-EM4321-CT-BI uses external current transformers for three-phase measurement.
03
Panel multifunction metering
VE-PM5110 is a 96 × 96 mm panel meter using external CT measurement.
Communication
Connected where the
application requires it.
Smart connectivity
Tuya / Wi-Fi
Available on the DIN-rail smart energy meters listed below. Functions remain model-specific.
- VE-EM2121-DT
- VE-EM4321-DT-BI
- VE-EM4321-CT-BI
Wired communication
RS485 / Modbus RTU
Used for wired integration with compatible monitoring, automation and building-management systems.
- VE-EM4321-DT-BI
- VE-EM4321-CT-BI
- VE-PM5110
At a glance
Product comparison
| Product | Architecture | Phase | Primary current arrangement | Tuya | RS485 |
|---|---|---|---|---|---|
| VE-EM2121-DT Single-Phase Direct Energy Meter | Direct | Single phase | 80 A direct | Yes | — |
| VE-EM4321-DT-BI Three-Phase Direct Energy Meter | Direct | Three phase | 100 A direct | Yes | Yes |
| VE-EM4321-CT-BI Three-Phase Indirect Energy Meter | Indirect / CT | Three phase | External CT | Yes | Yes |
| VE-PM5110 96 × 96 mm Three-Phase Multifunction Power Meter | Panel-mounted / CT | Three phase | External CT | — | Yes |
Technical resources
Documentation by model
Technical resources are organized by model. RS485-enabled meters also include Modbus communication documentation.
VE-EM2121-DT
Single-Phase Direct Energy Meter
3 technical PDF resources
Open product & downloads →VE-EM4321-DT-BIThree-Phase Direct Energy Meter
4 technical PDF resources
Open product & downloads →VE-EM4321-CT-BIThree-Phase Indirect Energy Meter
4 technical PDF resources
Open product & downloads →VE-PM511096 × 96 mm Three-Phase Multifunction Power Meter
4 technical PDF resources
Open product & downloads →VoltEdge Energy Metering