# Wi‑Fi module Espressif ESP‑WROOM‑02 with ESP8266EX chipset — serial network terminal module

**URL:** https://aio.lv/en/product--espressif-esp-wroom-02--12044954
**Data updated:** 2026-03-12 19:27 (EET)
**Category:** Network Equipment Accessories
**Manufacturer:** Espressif
**Manufacturer code:** ESP-WROOM-02
**EAN:** 5902887081859
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--espressif-esp-wroom-02--12044954

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Espressif ESP‑WROOM‑02 is a compact Wi‑Fi terminal module based on the ESP8266EX chipset, providing 802.11 b/g/n wireless connectivity and serial interfaces for integration into IoT devices and networked electronics. Suitable for adding Wi‑Fi networking, remote control, and telemetry to embedded projects, smart sensors, and home automation gateways.

## Long description

Espressif ESP‑WROOM‑02 is a compact Wi‑Fi terminal module built around the ESP8266EX chipset, designed to add wireless networking and serial communication to embedded projects. The module supports IEEE 802.11 b/g/n connectivity and provides a straightforward serial interface for integration into IoT devices, smart sensors, telemetry units, and home automation gateways. Its small form factor and established chipset make it suitable for applications where space and power are limited while reliable Wi‑Fi access is required.
Advantages
The module combines a widely supported ESP8266EX core with on‑board RF components, offering a simple path to wireless connectivity via standard 802.11 b/g/n. It provides a serial network terminal interface that simplifies firmware development and integration with microcontrollers. Thanks to its compact size and low-cost design, it is practical for prototypes and volume products that require remote control, data collection, or OTA updates over Wi‑Fi.
Suitable for
 Adding Wi‑Fi networking to microcontroller-based projects
 Smart sensor nodes and telemetry devices
 Home automation endpoints and networked switches
 Remote control and monitoring applications
 Prototyping and compact embedded systems
Key specifications
 Wi‑Fi standard: IEEE 802.11 b/g/n
 Core chipset: ESP8266EX
 Form factor: compact module suitable for PCB integration
 Interfaces: serial UART for data and command exchange
 Power: low-voltage operation appropriate for battery-powered designs
 Typical use: network terminal for IoT and embedded applications
How to use
Integrate the module into a host PCB or development board and connect power, ground and the UART serial lines for communication with the host microcontroller. Program or configure the module using serial AT commands or flash custom firmware compatible with the ESP8266EX environment. Use standard Wi‑Fi configuration steps (SSID, password, security mode) to connect the module to an access point. Ensure proper antenna placement and RF grounding on the PCB to maintain reliable wireless performance.
Usage recommendations
For reliable operation, follow recommended power supply decoupling and maintain a stable regulated voltage within the module's specified range. Keep the antenna area free from large metal objects and provide a clear RF path. When deploying in production, validate firmware stability, update procedures, and network security settings to protect connected devices and data.

## FAQ

### How much does the Espressif ESP‑WROOM‑02 Wi‑Fi module cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 36 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 13.07.2026 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 Espressif 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 Espressif 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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