LAVVA unity

LAVVA unity is a three-phase bidirectional Wi-Fi 3P+N electricity manager for 230/400 V~ installations, mounted on a DIN rail. The device monitors energy consumed and fed into the grid and analyzes real-time installation parameters: voltage, current, active and reactive power, energy and power factor.

Smart energy monitor

LAVVA unity works with current transformers with a primary current of 100 A, 200 A or 400 A (sold separately). Based on measurement data, it enables the implementation of automation functions: control of three independent, programmable relay outputs and sending PUSH notifications of events (e.g., exceeding pre-defined power or voltage thresholds).

Thanks to 2.4 GHz Wi-Fi communication, measurement data is transmitted to the cloud and available in the LAVVA mobile app, which provides remote access to current and archived data, visualization and reporting.

LAVVA unity operation diagram

Product features:

• Measurement of electrical energy consumption as well as current, voltage, and power across three phases.
• Bidirectional energy measurement – import from and export to the grid.
• Three freely programmable relay outputs.
• PUSH notifications about events (e.g., power or voltage threshold exceedance).
• Transmission of and access to measurement data in the cloud.
• Generation of energy consumption reports in Excel files.
• Presentation of data in the form of clear, easy-to-read charts.
• Ability to create automations based on electrical parameters (active and reactive power, voltage, current, power factor).
• Support for tariffs from all energy providers in Poland, including dynamic tariffs based on TGE prices.
• Energy consumption prediction function.

LAVVA unity – Technical Specification

Rated voltage	3 x 230 / 400 V 3 ~
Voltage tolerance	– 20% do 15 %
Rated power consumption	1,5 W
Frequency	50 / 60 Hz
Transmission power	Class 2 (±2%)
Relay parameters	0.1 – 33.3 mA / 100 A
Operating temperature range	from -10°C to 55°C
Power supply optical indication	LED indicator for each supply phase
Number of output channels	3
Relay contact parameters	3 × NO, 2 A / 250 V AC (volt-free contact)
Maximum conductor cross-section	14 (conductors with a cross-section up to 2.5 mm²)
Protection degree	IP20
Mounting method	TH-35 rail, 2 modules
Transmission	Wi-Fi 2.4 GHz 802.11 b/g/n
Operating range	Wi-Fi network range

MATERIAL TO DOWNLOAD

Enex Award

LAVVA unity, a modern energy management system developed by Zamel, received the ENEX Award 2026 during the International Power Industry and Renewable Energy Sources Fair ENEX in Kielce. The award is granted to the most innovative technological solutions in the energy sector. This distinction confirms the high technological value of the solution and highlights the growing importance of intelligent energy management systems in modern energy installations. More information CLICK