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Arduino Interface for cheap 2.4ghz RF enabled Solar Micro Inverters

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NETSGPClient

Arduino Interface for cheap 2.4ghz RF enabled Solar Micro Inverters using the so-called NETSGP protocol for communication.

Here is a YouTube video that shows the general function https://youtu.be/uA2eMhF7RCY YoutubeVideo

Examples

The PollDemo shows how to request a status from the Micro Inverter synchronously. Input your inverter id to get status updates.

The AsyncDemo shows how to get a status from multiple Micro Inverters asynchronously. Input one or more inverter identifiers to get status updates inside the callback.

Supported Devices

You can find an overview of all devices and their datasheets here

Model Tested Compatible Notes ID starting with
SG200LS 200W model
SG200MS 200W model 11000001
SG200HS 200W model
SG200TS 200W model
SG250LS 250W model
SG250MS 250W model
SG250HS 250W model
SG250TS 250W model
SG300LS 300W model
SG300MS 300W model 19000001
SG300HS 300W model
SG300TS 300W model
SG350LS 350W model
SG350MS 350W model
SG350HS 350W model
SG350TS 350W model
SG400MS 400W model
SG400HS 400W model
SG400MD 400W model
SG400TD 400W model
SG450MS 450W model
SG450HS 450W model
SG450MD 450W model
SG450TD 450W model
SG500MS 500W model
SG500HS 500W model
SG500MD 500W model 34000001
SG500TD 500W model
SG600MD 600W model 38000001
SG600HD 600W model
SG600TD 600W model
SG700MD 700W model 41000001
SG700HD 700W model
SG700TD 700W model
SG800MD 800W model 26000001 ❔
SG1000MD 1.0kW model
SG1000HD 1.0kW model
SG1000MQ 1.0kW model 48000001
SG1000TQ 1.0kW model
SG1200MT 1.2kW model
SG1200HT 1.2kW model
SG1200MQ 1.2kW model 52000001
SG1400MQ 1.4kW model
SG1400HQ 1.4kW model

Model number explanation

Model numbers consist of three parts. Prefix, Wattage and Suffix. The suffix itself consists of two capital letters having both different meanings. The first suffix letter specifies the maximum voltage capabilities of the inverter, the second letter the amount of input MC4 connector pairs. The wattage gets split across all inputs.

Part Value Meaning
Prefix SG Presumably stands for Solar Grid
Wattage 200 - 1400 Maximum power capability
Suffix first letter L Low operating voltage 10V-30V, MPPT voltage 14V-24V
M Medium operating voltage 18V-50V, MPPT voltage 24V-40V
H High operating voltage 30V-70V, MPPT voltage 36V-60V
T Top? operating voltage 70V-120V, MPPT voltage 80V-115V
Suffix second letter S One MC4 connector pair (Single)
D Two MC4 connector pairs (Dual)
T Three MC4 connector pairs (Triple)
Q Four MC4 connector pairs (Quad)

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Arduino Interface for cheap 2.4ghz RF enabled Solar Micro Inverters

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