Electricity energy meter with built-in internal WI-FI antenna 3F+N, WI-MEF-3-OPTI-100

Smart energy consumption monitoring in your home

This three-phase electricity energy monitor with a built-in Wi-Fi antenna is the perfect solution for people who want to have full control over their energy consumption at home or in their company. The device allows remote access to data on consumption, voltage, current and power, which enables cost optimization and increased energy efficiency. Thanks to wireless communication and easy installation, monitoring becomes simple and convenient.

The monitor is designed to work in three-phase installations with a voltage of 3 × 230/400 V AC and a frequency of 50÷60 Hz. Current transformers with a primary current of 100 A and a secondary current of 30 mA ensure measurement accuracy of 1% for the meter and 0.5% for the transformers. The meter constant is 1000 imp/kWh, which allows for precise energy consumption readings.

Easy installation and remote access

The device is easy to install thanks to the possibility of mounting on a standard 35 mm rail. Screw terminals allow connection of wires with a cross-section of 2.5 mm² (stranded) or 4.0 mm² (solid), and the tightening torque is 0.5 Nm. The set includes miniature current transformers that do not require interference with the existing electrical installation – just pass the wire through the transformer.

After connection, the monitor communicates wirelessly via Wi-Fi (2.4 GHz) with the F&F cloud, enabling access to data from the mobile application (Android and iOS) or web browser. Thanks to this, you can monitor your energy consumption from anywhere and at any time.

Functionality and application

Energy Monitor 3 is not only reading energy consumption. The device allows you to:

• Monitoring network parameters: Voltage, current, power and energy consumption are recorded and available in real time.
• Data analysis: Access to the history of measurements allows you to identify consumption patterns and optimize energy consumption.
• Control of photovoltaic installations: The monitor can be used to measure energy production in PV installations and meter heat pumps.
• Detection of exceedances: Possibility of setting alerts in case of exceeding specified voltage or power values.
• Data security: The Polish F&F cloud guarantees the safety and protection of user privacy.

The device is characterized by low power consumption (≤ 2 W) and a wide operating temperature range (-20÷50°C). The IP20 protection class provides protection against touch and dust. Compact dimensions (2 modules – 35 mm) allow for easy placement in the electrical switchboard.