Featured Integration: IOMeter - Wireless Smart Meter Reading Made Simple

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Till Follow 01 Sep 2025
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This post is part of a series that introduces details of our device integrations in Zerofy.

We’re excited to announce our latest featured integration: IOMeter, a game-changing smart meter reading solution that’s making waves in the German energy market. What makes IOMeter special isn’t just its compatibility with German smart meters, but its innovative approach to solving one of the biggest challenges in smart home energy monitoring.

The Smart Meter Challenge in German Homes

In Germany, smart meters are often installed in basements or utility rooms where WiFi signals are weak or non-existent. Traditional smart meter readers require either WiFi at the meter location, complex wiring, or expensive professional installation. IOMeter solves this with an elegant wireless solution.

IOMeter’s Innovative Two-Component System

IOMeter consists of two main components that work together to bridge the gap between your meter and your living space:

IOMeter Core - The Smart Reader

The Core unit attaches to your smart meter and reads consumption data through the optical interface. It operates on an independent 868MHz wireless system separate from your WiFi network.

Key Features:

  • Battery-powered: 2 AA batteries for up to 1.5 years
  • Universal compatibility: Works with 99% of modern digital meters
  • Robust design: IP51 protection, -25°C to +55°C operation
  • Flexible power: USB-C or battery operation

IOMeter Bridge - The WiFi Connector

The Bridge unit bridges the Core’s wireless network to your home WiFi, forwarding data to the cloud.

Key Features:

  • Extended range: Bridges up to 50 meters and 2-3 floors
  • Strategic placement: Position anywhere between meter and WiFi router
  • Reliable connection: Local buffering during internet outages

Why We Love IOMeter

1. Effortless Installation

IOMeter can be set up in just 5 simple steps - no technical expertise required. The system automatically starts transmitting data once installed.

2. Perfect for German Market

Compatible with meters that comply with FNN-Lastenheft, SML-protocol, and IEC-62056-21 standards - covering virtually all modern German smart meters.

3. Works Seamlessly with Zerofy 😊

You can use IOMeter just like any other meter integrated with Zerofy — not only to monitor, but also to automatically control devices through Zerofy’s Autopilot. Combine it with your balcony solar setup, manage smart plugs and switches, or even adjust the output of your plug-and-play battery (e.g. Anker) to match your home’s energy consumption.

The Wireless Bridge Advantage

IOMeter’s 868MHz wireless system bridges up to 50 meters and 2-3 floors, working independently of your WiFi network. This makes it ideal for multi-family homes, basements, garages, or any location where WiFi at the meter is problematic.

IOMeter + Zerofy: A Perfect Partnership

The integration creates a powerful combination. Users can monitor real-time consumption, control energy devices, optimize costs, and manage their entire energy ecosystem from one platform.

As IOMeter mentions on their website, the integration is seamless - activate Zerofy in the IOMeter app under “Partner” and add IOMeter to your Zerofy setup.

Technical Specifications

Core Unit: USB-C or 2x AA batteries, 868MHz wireless, 1.5 year battery life, IP51 protection, -25°C to +55°C operation.

Bridge Unit: USB-C power, WiFi/Bluetooth/868MHz connectivity, IP51 protection, same temperature range.

Security: AES128 encryption, enterprise WiFi security, EU data hosting (GCP).

Get Started with IOMeter

IOMeter is available for €119.90 with free shipping across Germany. The system includes both Core and Bridge units.

Ready to transform your energy monitoring?

With IOMeter’s innovative wireless approach and seamless Zerofy integration, monitoring your energy consumption has never been easier.


IOMeter is a registered trademark of IOMeter GmbH. For more information about supported devices and technical specifications, visit www.iometer.de.