APsystems Energy Communication Unit ECU-B

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The APsystems Energy Communication Unit B (ECU-B) is the information gateway for APsystems Micro-Inverters. ECU-B was specially developed to monitor small PV systems up to 4 PV modules. The device collects module performance data from each individual inverter and transmits this information in real time to an internet database, using only a single data and power cable.

Through the APsystems energy monitoring and analysis software, the ECU-B offers you an accurate analysis of every inverter and module in your solar system. You can access your solar system in seconds via the user-friendly web interface or the EMA Manager app.


Collection and transmission of inverter data
Real-time monitoring of each individual inverter
Built-in WiFi
Small size, flexible installation
Maximum monitoring of up to 4 modules

The ECU-B is intended for monitoring your APSystems inverters or solar systems. This Internet-based gateway communicates wirelessly (ZigBee; closed protocol) with the respective inverters and sends the generation data to the APSystems portal, where you set up an account.
You can then conveniently display and save the performance, yields and error status of each individual solar module or inverter.

Technical specifications

Integrated Wi-Fi: 802.11 g/n
Communication: ZigBee 2.4GHz
Wireless security: WEP, WPA2-PSK
USB interface: 5 Vdc-0.5A output
AC adapter: 5V, 2A
Energy consumption: 1.7Wh
Max. number of PV modules: 4
Ambient temperature: -20°C - +65°C
Dimensions (WxHxD): 122 x 87 x 25 mm
Weight: 150g
Scope of delivery:

1x APsystems ECU-B