What is the Uno - Smart Meter Accessory (TommaTech NG Compatible)?
Uno - Smart Meter Accessory (TommaTech NG Compatible) is a smart meter that measures the energy flow at single-phase (1P2W) grid connections and passes the information to the inverter system via RS485. It is the single-phase counterpart of the three-phase Trio model and has a narrower body.
The model type is Uno Smart Meter DDSU666. The voltage/current range is 0.25-5(80) A; the phase voltage is 184-264.5 Vac. Power consumption is 1 W, the body measures 100 x 36 x 65.5 mm and the weight is 1.2 kg. It communicates over Modbus-RTU at 9,600 bps and has accuracy class B. A 10 m RS485 cable and an RJ45 connector are supplied.
Technical specifications
| Property | Value |
|---|---|
| Model Type | Uno Smart Meter DDSU666 |
| Interface | RS485 |
| Size | 100 x 36 x 65.5mm |
| Weight | 1.2 kg (2.6 lb) |
| Power Consumption | 1 W |
| Voltage / Current | 0.25-5(80)A |
| Operating Humidity | <75% non-condensing |
| Mounting System | DIN35 Rail |
| Power Grid Type | 1P2W |
| Phase Voltage | 184Vac ~ 264.5Vac |
| Accuracy Class | Class B |
| Baud Rate | 9,600 bps |
| Communication Protocol | Modbus-RTU |
| Operating Temperature Range | -25°C ~ +55°C |
| Storage Temperature Range | -25°C ~ +55°C |
| Accessories | RS485 Cable (10 m/ 33 ft.), RJ45 Connector |
What projects is it suitable for?
The single-phase smart meter is used in these cases:
- Single-phase home and apartment installations
- Production-consumption monitoring with a single-phase hybrid or grid-tied inverter
- Installations with little room in the meter panel
Use in Antalya and Solar Nexo support
In holiday homes and houses in Antalya, air-conditioning-driven consumption swings are common; the meter at the grid entry helps show this consumption together with solar production. The operating temperature is between -25°C and +55°C; the temperature inside the panel should stay within this range in summer.
Solar Nexo mounts the meter on the DIN35 rail and completes the RS485 connection during commissioning. The product's datasheet can be downloaded from this page.
