Watt Analytics GmbH

Our Electric Meters

are inteligent meters.

Optimized for specific applications, reliable and exact.

electric power meter iWatt Meter

iWatt Meter

The iWatt Meter provides precise measurements of power consumption at an attractive price. It can be used in private homes and companies and ensures a relatively short payback period.

The iWatt Meter is an intelligent electric power meter that records your current power consumption in kilowatt hours (kWh). Thus, you get your total power consumption in real time and to the second.

The iWatt Meter is delivered including all necessary magnetic contacts and connecting cables.

Here you can download the installation instructions.

Supports 50 Hz or 60 Hz networks with current measurement up to 100A and voltage measurement from 110V to 400V.

Supports standards EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22 and IEC 62053-23.

Compatible with 3-phase, 3 or 4-wire meters (Delta or Wye) and other 3-phase services.

Provides the total (fundamental and harmonic) active, reactive and apparent power as well as basic effective / reactive energy in each phase and in the whole system. Detects phase order.

Collects high-precision real-time properties with 1% error (typical) in active and reactive energy over a dynamic range of 3000 to 1 at TA = 25 °C.

Sends the measured characteristics at least 4 times per second using the MQTT protocol

Can be installed on the DIN rail.

electric power meter SmartPI


Do you use a PV plant for the production of own electricity? Do you consume night electricity for your electric heater or your water boiler? The SmartPI is the ideal meter for private homes and companies who want to produce individual current, e.g. via a PV system, and wish to control as well as make optimal use of the self-produced electricity.

The SmartPI is equipped with built-in software that records total power consumption as well as power generation.

The SmartPI is delivered including all necessary magnetic contacts and connecting cables.

Here you learn more about installing the SmartPI.

Raspberry Pi compatible connector, Raspberry Pi compatible size

Galvanic separation

Integrated power supply from the voltage measuring path via stable terminals (optionally 2A or 2.5A DC current)

Opensource driver and API

Current measurement on 3-phase + neutral conductor

Connection for converters with secondary output 1A / 50mA

Screw terminals for connecting the current and voltage measurement

Battery-buffered RTC

Integrated RS-485 interface for connecting Modbus devices

Relay for switching, additional status LED

Valuable housing with DIN rail mounting

Analyze Your Wattage

Save Electricity and Money

Electric Power Consumption in Real Time

Precise Measuring Data

User-Friendly Handling

Monitor Your Household with Alarms

Complete Solution

Installation Service Included