Tuya 100A Smart WiFi Three-Phase Energy Meter for Photovoltaics with Two-Way Monitoring

First, check that the phase and neutral wires are correctly wired, that the power supply is present, and that the device is used within its 80-300V AC operating range. Also, check that the installation is performed correctly on a 3P4W system and a 35 mm DIN rail.

Not necessarily. If the meter is on but the app isn't updating properly, the problem is often related to unstable WiFi, the device being offline, or the setup not being complete. Check the WiFi LED on your device and repeat the connection process if necessary.

This usually results from protection thresholds that are too low or intervention delays that are too short. This model allows you to configure protections such as overvoltage, undervoltage, overcurrent, undercurrent, voltage/current imbalance, phase failure, and phase sequence, so it's important to check that the set values are compatible with your system.

This model monitors three-phase voltage and current imbalance. If this alarm appears, it's a good idea to check load distribution, any overloaded phases, the correct neutral connection, and to ensure there are no anomalies in the upstream system.

To access the settings, hold down the configuration button for about 5 seconds until the value starts flashing. Then, use the up/down buttons to change the values, briefly press the setup button to move to the next parameter, and confirm with OK. To exit and save, hold down the OK button.

Yes, the product supports bidirectional energy measurement, a useful feature for photovoltaic systems because it allows you to monitor both the energy consumed and that fed into or detected in reverse.

The most common problem is an incorrect connection between inputs and outputs or a configuration that isn't consistent with a three-phase system. In these cases, it's a good idea to check the installation direction, the phase wiring, and whether the device is configured to correctly monitor the energy flow.

The device allows you to view various parameters in real time, including voltage, current, power, power factor, frequency, and energy data. This allows you to instantly check the system's status even without using the app.

Standard deliveries to Italy generally take 24-48 hours from the time the package leaves the warehouse.

Orders confirmed by 3:30 PM on weekdays (Monday-Friday) are processed and shipped the same day.
Orders placed after 3:30 PM or on weekends or public holidays will be processed on the next working day.

Yes, we ship internationally to the European Union and several non-EU countries via couriers such as UPS Standard and DHL Express.

• For the EU, with UPS Standard the average times are 2-3 working days .

• With DHL Express, usually 1-2 business days .