# Wi‑Fi Module for Solar Inverter QOLTEC 53963 RS232 — RS232 connectivity, model 53963

**URL:** https://aio.lv/en/product--qoltec-53963--11134440
**Data updated:** 2026-03-07 18:16 (EET)
**Category:** Solar Panel Accessories
**Manufacturer:** QOLTEC
**Manufacturer code:** 53963
**EAN:** 5901878539638
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 63.99 €
**Prices and availability valid until:** 2026-08-17 23:59
**Price without VAT (21%):** 52.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-53963--11134440

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.79 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

QOLTEC 53963 is a Wi‑Fi communication module for solar inverters that uses an RS232 interface. It enables wireless data transfer between the inverter and monitoring systems or mobile apps, allowing remote performance monitoring and basic configuration. Designed as an add‑on accessory, it helps users track generation data, diagnose issues, and improve system visibility without replacing the inverter.

## Long description

QOLTEC 53963 is a Wi‑Fi communication module designed as an add‑on for compatible solar inverters. The module uses an RS232 interface to establish a wireless link between the inverter and external monitoring systems or mobile applications. It enables remote transfer of performance data and basic configuration commands, allowing owners and technicians to view generation statistics and diagnose operating states without direct physical access to the inverter.
Advantages
The module provides wireless telemetry via RS232, reducing the need for wired connections and simplifying installation of monitoring equipment. It enables remote access to real‑time and historical generation data, supports basic inverter configuration over the network, and helps identify faults or performance drops faster by transmitting status information to monitoring platforms. As an add‑on accessory, it preserves the original inverter hardware while expanding connectivity options.
Suitable for
 Owners of residential or small commercial solar installations seeking remote monitoring
 Technicians and installers who need to access inverter data without on‑site visits
 Systems integrating inverter output data into third‑party monitoring platforms or mobile apps
Key specifications
 Wireless connectivity: Wi‑Fi (for data transfer and remote access)
 Interface to inverter: RS232 serial connection
 Function: telemetry and basic remote configuration
 Form factor: compact add‑on module for external mounting or internal slot (model dependent)
 Data types: generation metrics, status codes, fault reporting (dependent on inverter capabilities)
How to use
Install the module by connecting it to the inverter's RS232 port according to the inverter manufacturer's instructions and secure any mounting as required. Configure the module to join the local Wi‑Fi network using the provided setup procedure or configuration interface. Once connected, register or link the module with the inverter monitoring software or mobile application to start receiving telemetry and status updates. Verify communication and confirm that generation data and status messages appear in the monitoring interface.
Usage recommendations
Place the module where it can receive a stable Wi‑Fi signal and avoid locations with heavy electromagnetic interference. Use the inverter’s recommended cabling and grounding practices when connecting via RS232. For continuous monitoring and reliable alarms, ensure the monitoring platform and mobile apps are configured with correct credentials and notification settings. Refer to the inverter and module documentation for compatibility details and firmware update procedures.

## FAQ

### How much does the Wi‑Fi Module QOLTEC 53963 RS232 cost, and is it available for purchase?

The price is 63.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 64 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 28.07.2026 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. All transactions are 100% secure and encrypted.

### 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 QOLTEC 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 QOLTEC 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

https://aio.lv/img/cache/product/11134440/61842943_large.webp