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Strong   Reliable   Versatile

S1-W4G-ST

4 Pin / USB

A data monitoring device that plugs externally into the bottom of the inverter. The logger relays information from the inverter to the Solis monitoring platform, SolisCloud. It can connect to a local router through Wi-Fi or to a 4G cellular network. If the Wi-Fi network goes down, the logger automatically switches to using the cellular network to limit the loss of data. There are two versions of the logger, USB for S6 hybrid inverter models and 4-pin for all other Solis inverter models. Stores full inverter data offline ; max 30-day storage for 1 inverter, the storage duration decreases proportionally as more inverters are connected. Backfills complete gap-free historical data upon network recovery.

Datasheet Download
S1-W4G-ST-US-Flyer-V2.2
More Downloads

Solis Wi-Fi & Cellular Data Logger

Leading Features

  • NEMA 4X outdoor rated

  • 2-year warranty included

  • LED status indicator lights

  • Quick, easy, and safe to install

  • Allows for remote firmware updates

  • 5-year and 10-year data plan options

  • Works with all Solis inverter models

  • Supports up to ten (10) inverters per logger

  • Relays system fault alarms to the Solis monitoring portal

  • Automatically switches over to cellular when the Wi-Fi fails

  • Comes with both Wi-Fi and 4G cellular communication options

  • Provides detailed system information for remote troubleshooting

  • Support maximum 30-day breakpoint resume transmission for single inverter

Download
Download
  • Specification Download
  • Certificate Download
  • Manual Download
S1-W4G-ST-US-Flyer-V2.2
Download
Solis_certificate_FCC 47_G1-W4G-ST&S1-W4G-ST(4G)_FCC ID-V01
Download
Solis_certificate_FCC 47_G1-W4G-ST&S1-W4G-ST(2.4G)_FCC ID-V01
Download
Solis_certificate_FCC CFR Title 47&ANSI C63.4_G1-W4G-ST&S1-W4G-ST_FCC-V01
Download
CE  S1-W4G-ST-2025-7-29
Download
Solis_certificate_EN 62311-2018&EN 62368-1&EN 301489-1(-17)&EN 300328_G1-W4G-ST&S1-W4G-ST_RED_V01
Download
GL_certificate_IEC 62368_G1-W4G-ST&S1-W4G-ST_CE_LVD_V01
Download
Manual_Solis_S1-W4G-ST_V3.2_20250806
Download
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