# Communication, GPS and IoT

> WiFi and Ethernet modules, ESP8266/ESP-01 adapters, Ethernet shields, industrial 3G/4G routers and fiber optic converters

- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Category page: https://sigmanortec.ro/en/communication-gps-and-iot
- Category: Mechatronics and IoT > Communication, GPS and IoT
- Prices: RON, VAT included; prices and stock as of 2026-10-22 00:56 (Europe/Bucharest)

## Products (8)

### ESP-01, ESP8266 adapter module
- Page: https://sigmanortec.ro/en/esp-01-esp8266-adapter-module
- Details: https://sigmanortec.ro/en/llms/p/321.md
- Price: 4.60 RON
- Availability: In stock; 1-2 zile
- Reference: 33579 · EAN: 5941636951067

The adapter for ESP-01, ESP8266 simplifies prototyping and rapid integration into IoT projects, provides a stable interface for programming and testing, has easily accessible pins for connection to a breadboard, includes support for 3.3V power supply and UART serial signals, is compact and robust for use in the laboratory or production.
The PCB adapter for ESP-01 and ESP-01S is the perfect solution for quick integration of ESP8266 WiFi modules into breadboard projects. The device offers a stable interface for programming and testing, with easily accessible pins for direct connection to a standard breadboard, and includes support for 3.3V power supply and UART serial signals.

### Adapter module for ESP-01, ESP8266, 5V/3.3V
- Page: https://sigmanortec.ro/en/adapter-module-for-esp-01-esp8266-5v-33v
- Details: https://sigmanortec.ro/en/llms/p/322.md
- Price: 10.14 RON
- Availability: In stock; 1-2 zile
- Reference: 33508 · EAN: 5940986046218

Allows quick connection of an ESP-01 ESP8266 to Arduino and other 5V logic boards, providing stable power supply through integrated 3.3V regulator and logic level conversion on the board. Operates at 4.5–5.5V DC input, supports current up to 240mA, ensures increased compatibility in IoT projects and prototyping through simple module assembly.
Adapter module for the ESP-01 WiFi board, ESP8266, with 5V power supply thanks to the presence on the board of a 3.3V voltage regulator (the operating voltage of the ESP-01), compatible with Arduino and other development boards.

### Nano Ethernet Shield ENC28J60
- Page: https://sigmanortec.ro/en/nano-ethernet-shield-enc28j60
- Details: https://sigmanortec.ro/en/llms/p/709.md
- Price: 44.36 RON
- Availability: In stock; 1-2 zile
- Reference: 33064 · EAN: 5949780965220

Ethernet shield for Nano based on the Microchip ENC28J60 controller and RJ45 HR911105A connector. Allows wired internet connection, working as a server or client. Mounts by direct connection onto the Nano board. Stable libraries and examples are available, useful for IoT and automation projects. Reference 33064.

### Shield Ethernet W5100 with MicroSD
- Page: https://sigmanortec.ro/en/shield-ethernet-w5100-with-microsd
- Details: https://sigmanortec.ro/en/llms/p/887.md
- Price: 41.43 RON
- Availability: Out of stock
- Reference: 9080 · EAN: 5943145083390

Ethernet shield based on the Wiznet W5100, featuring a TCP/UDP stack with up to 4 simultaneous sockets. Allows Arduino boards to connect to the internet or LAN using the Ethernet library. Includes a MicroSD slot for storing and serving files over the network, accessible via the SD library. Compatible with Arduino 2009, UNO, Mega 1280, Mega 2560, Nano, Duemilanove. Dimensions: 75 x 55 x 25mm. Mounts directly onto the compatible development board.

### Ethernet module, ENC28J60, SPI interface, 3.3V, 25MHz crystal
- Page: https://sigmanortec.ro/en/ethernet-module-enc28j60-spi-interface-33v-25mhz-crystal
- Details: https://sigmanortec.ro/en/llms/p/1644.md
- Price: 39.68 RON
- Availability: In stock; 1-2 zile
- Reference: 9529 · EAN: 5942371815621
- Specifications: Input Voltage: 3.3 V

Ethernet module with ENC28J60 chip and integrated 25MHz crystal, powered at 3.3V. Converts the Ethernet signal to SPI, with a transfer rate of up to 20MHz, for integration with Arduino or other development boards. Network interface HR911105A, compatible with Base-T 10/100/1000 networks, supports Full and Half-Duplex modes and offers automatic filtering of erroneous packets. Dimensions: 59 x 35mm.

### 3G Industrial Router, USR-G806S, IoT, RS485, WiFi, RTU to TCP, 9-36V
- Page: https://sigmanortec.ro/en/3g-industrial-router-usr-g806s-iot-rs485-wifi-rtu-to-tcp-9-36v
- Details: https://sigmanortec.ro/en/llms/p/1792.md
- Price: 680.02 RON
- Availability: In stock; 1-2 zile
- Reference: 9771 · EAN: 5945972222492
- Specifications: Supply Voltage: 9; Maximum Input Voltage: 36; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.

IoT cellular router for connecting industrial equipment to the internet and integrating data into SCADA or cloud systems, with 2G/3G, WiFi and two Ethernet ports for flexible access and failover. Includes RS485 with Modbus RTU to TCP conversion, VPN support for secure communications, watchdog for stability, wide 9-36V power supply and DIN rail or wall mounting.
The USR-G806s is an IoT cellular router that integrates 3G, Wi-Fi and VPN technologies to provide easy, reliable and secure Internet connectivity, as well as high-speed data access for equipment interconnection.

### 4G industrial router, USR-G806S, IoT, RS485, WiFi, RTU to TCP, 9-36V
- Page: https://sigmanortec.ro/en/4g-industrial-router-usr-g806s-iot-rs485-wifi-rtu-to-tcp-9-36v
- Details: https://sigmanortec.ro/en/llms/p/2170.md
- Price: 998.55 RON
- Availability: In stock; 1-2 zile
- Reference: 88006 · EAN: 5945972222492
- Specifications: Input Voltage: 9-36VDC; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.

Industrial 4G router for secure connectivity in IoT and automation applications, offers fast internet access and equipment interconnection via 4G, WiFi and 2 Ethernet WAN LAN ports. Integrates RS485 with Modbus RTU to TCP conversion, supports VPN for remote access, operates at 9-36V and includes 4G and WiFi antennas.
The USR-G806s is an IoT cellular router that integrates 4G, Wi-Fi, and VPN technologies to provide easy, reliable, and secure internet connectivity, as well as high-speed data access for device interconnection.

### Mini Gigabit converter set for fiber optic, A and B, 1000Mbps
- Page: https://sigmanortec.ro/en/mini-gigabit-converter-set-for-fiber-optic-a-and-b-1000mbps
- Details: https://sigmanortec.ro/en/llms/p/2255.md
- Price: 103.89 RON
- Availability: In stock; 1-2 zile
- Reference: 88093 · EAN: 5944758234599

Quickly expand your single mode fiber optic network using a single fiber, with stable bidirectional communication between modules A and B. Provides 10 100 1000 Mbps speeds, auto-adaptive Gigabit RJ45 port and SC UPC or APC connection, plug and play installation and reliable operation up to 3 km, ideal for building links, IP surveillance and industrial applications.
The Mini Gigabit Fiber Optical Media Converter set includes converter modules A and B, designed to extend networks that require stable and efficient transmission over optical fiber.
The set includes two modules: Module A and Module B, designed to work together on a single single-mode optical fiber.