© 2021 Hoymiles Power Electronics Inc. All rights reserved.
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Single-phase Microinverter User Manual
4. DTU Installation
4.1 System Capacity
The DTU-Pro is capable of monitoring up to 99 panels. If the communication between the DTU and the
microinverters suffers interference caused by installation conditions, the number of PV modules that the DTU
can monitor may be reduced.
Note:
Max. monitoring quantity is for open space with ideal installation conditions described in both the
DTU and microinverter manuals. The distance between the microinverter and the DTU needs to be within the
required range.
4.2 Basic Conditions Required
Before installing the DTU, ensure that the site meets the following requirements:
• Standard 220 VAC power outlet.
• Stable broadband Internet connection.
• Router with Ethernet port.
Environmental requirements for DTU installation:
• Away from dust, liquid, acids, or corrosive gas.
• The temperature should be between -20ºC and 55ºC.
If you plan to install the DTU on the wall, prepare two #8 (4.166 mm diameter) screws and a screwdriver in
advance.
4.3 Dimensions
(Unit: mm)
