# Growatt cellular interface Shine 4G‑X NV821129 — 4G connectivity module for Growatt inverters

**URL:** https://aio.lv/en/product--growatt-nv821129--10458094
**Data updated:** 2025-12-30 08:41 (EET)
**Category:** Power Inverters
**Manufacturer:** Growatt
**Manufacturer code:** NV821129
**EAN:** 9990000821129
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 82.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 68.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--growatt-nv821129--10458094

## 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

Cellular interface Growatt Shine 4G‑X NV821129 provides 4G connectivity for compatible Growatt inverters. Designed to enable remote monitoring and data transmission over mobile networks, it supports real‑time system status, performance tracking and cloud access. Ideal for residential and commercial PV systems where stable cellular communication is required.

## Long description

The Growatt cellular interface Shine 4G‑X (NV821129) is a USB Type‑A module that provides 4G/3G/2G mobile connectivity for compatible Growatt on‑grid X‑series inverters. Installed directly on the inverter, it links inverter data to Growatt’s ShineServer (server.growatt.com) and stores up to 30 days of inverter data locally in case of a network outage. The device supports Modbus RTU for inverter communication and Modbus TCP for server communication, enabling remote monitoring and fault detection of the photovoltaic system.
Advantages
The module supports multiple cellular bands (GSM 900/1800 MHz; WCDMA B1/B5/B8; LTE FDD B1/B3/B5/B7/B8/B20; LTE TDD B38/B40/B41) to ensure wide network compatibility. It uses a standard SIM card (not included) and consumes up to 1.2 W at 5 V. The interface is compact (122 × 47 × 32 mm), lightweight (60 g) and rated for operating temperatures from −30 °C to +65 °C, making it suitable for various installation environments. Data transmission interval is configurable at 5‑minute intervals for regular updates to the cloud.
Suitable for
On‑grid Growatt X‑series inverters
Residential solar installations requiring remote monitoring
Commercial PV systems with mobile network access
Key specifications
Supported network: 4G/3G/2G
System and frequency bands: GSM 900/1800 MHz; WCDMA B1/B5/B8; LTE FDD B1/B3/B5/B7/B8/B20; LTE TDD B38/B40/B41
Inverter communication: USB — Modbus RTU
Server communication: Modbus TCP (ShineServer: server.growatt.com)
SIM slot: standard SIM card (purchased separately)
Operating voltage: 5 V
Max rated power: 1.2 W
Interface: USB Type‑A
Data retention on device: 30 days
Data transmission interval: 5 min
Operating temperature: −30 °C to +65 °C
Dimensions: 122 × 47 × 32 mm
Weight: 60 g
Warranty: 12 months
How to use
Insert a standard SIM card into the module (SIM card not included), plug the USB Type‑A connector into the compatible Growatt X‑series inverter USB port, and register the device on ShineServer (server.growatt.com) following Growatt’s configuration procedure. Once connected, the module will transmit inverter data to the cloud at approximately 5‑minute intervals and retain up to 30 days of data locally if the network connection is lost.
Usage recommendations
Install the module in a location that protects it from direct water exposure and extreme debris; ensure reliable mobile network coverage and use a data plan appropriate for periodic telemetry uploads. Verify compatibility with your specific Growatt X‑series inverter model before purchase.

## FAQ

### How much does the Growatt cellular interface Shine 4G‑X NV821129 cost, and is it available for purchase?

The price is 82.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 Growatt cellular interface Shine 4G‑X NV821129 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 Growatt 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 Growatt 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

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