NETSGPClient

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

Hardware

ESP32 LC12S SerialBridge

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)