# SUNGROW WLAN LAN Interface WiNet‑S NV821303 — network communication module for inverters

**URL:** https://aio.lv/en/product--sungrow-nv821303--10544832
**Data updated:** 2025-12-30 08:48 (EET)
**Category:** Power Inverters
**Manufacturer:** SUNGROW
**Manufacturer code:** NV821303
**EAN:** 9990000821303
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 96.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 79.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sungrow-nv821303--10544832

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.89 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

SUNGROW WiNet‑S NV821303 is a WLAN/LAN interface module designed for SUNGROW inverters. The device provides network connectivity via wireless and wired Ethernet, enabling remote monitoring, data transmission, and integration with monitoring platforms. Suitable for installation with compatible inverters to simplify system communication, diagnostics and performance monitoring.

## Long description

SUNGROW WiNet‑S NV821303 is a LAN/WiFi communication module that connects compatible Sungrow inverters to the iSolarCloud platform via wired Ethernet (RJ‑45) or WLAN. The module enables remote monitoring of inverter operation and energy production, supports local and remote parameter configuration, firmware updates and Smart IV Curve Diagnosis. It includes a multifunction control button and three LED indicators, and is intended for use with supported Sungrow inverter models.
Advantages
The WiNet‑S supports both LAN and WLAN connections to provide flexible installation options; an RJ‑45 connector allows direct wired connection to the inverter and router for stable communication. It offers 10/100 Mbps data transfer, IEEE 802.11 b/g/n Wi‑Fi compatibility, extended operating temperature range and IP66 protection for outdoor use. The module is compact, low‑power (input DC 5V/2.1A, consumption \<5W) and designed to work seamlessly with Sungrow inverter firmware and monitoring services.
Suitable for
Remote monitoring of Sungrow inverters and solar plant performance
Local and remote inverter parameter setup and firmware updates
Installing network connectivity where wired LAN or WLAN is required
Smart IV Curve Diagnosis and troubleshooting of PV systems
Key specifications
Supported inverters: SG‑RS, SG‑RT, SH‑RS, SH‑RT and SG‑CX series models (see product compatibility list)
Network: LAN / WLAN (IEEE 802.11 b/g/n)
Data rate: 10/100 Mbps
Wi‑Fi frequency: 2.412–2.472 GHz; transmission power: IEEE802.11b \<20 dBm; IEEE802.11n HT20 \<14 dBm
Max communication range: 100 m
Input: DC 5 V / 2.1 A; Power consumption: \<5 W
Interface to inverter: RJ‑45
Number of supported devices: 1
Operating temperature: -30 °C to +60 °C
Protection class: IP66
Dimensions: 132 x 48 x 36 mm; Weight: 73 g
Warranty: 24 months
How to use
Connect the WiNet‑S RJ‑45 plug to the corresponding LAN port on the compatible Sungrow inverter. For a wired setup, connect a network cable from the module to the router; the inverter will establish a connection to the iSolarCloud server automatically. For wireless setup, follow the inverter or iSolarCloud setup procedure to configure WLAN credentials. Use the multifunction button and LEDs for status checks and basic operations. Perform firmware updates and parameter changes through the inverter interface or the iSolarCloud portal.
Usage recommendations
Prefer a wired LAN connection where possible for more stable data transfer; ensure the device is installed in a location compliant with the stated operating temperature range and IP66 protection rating. Verify model compatibility before installation.

## FAQ

### How much does the SUNGROW WiNet‑S NV821303 WLAN/LAN interface cost, and is it available for purchase?

The price is 96.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can SUNGROW WiNet‑S NV821303 WLAN/LAN interface be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All SUNGROW products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized SUNGROW service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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