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2 Channel 5V Optocoupler Relay module
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2 Channel 5V Optocoupler Relay module

2-channel 5V optocoupler relay module for Arduino, Raspberry Pi, and microcontroller control of AC/DC devices.

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Sonoff IoT WiFi Development Board
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Sonoff IoT WiFi Development Board

Sonoff IoT WiFi Development Board – A compact, WiFi-enabled board ideal for IoT and smart home projects. Supports wireless control, easy programming, and seamless integration with sensors and automation systems.
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Sonoff Environmental Monitoring System
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Sonoff Environmental Monitoring System

Sonoff Environmental Monitoring enables real-time temperature and humidity tracking with smart alerts and remote access via the eWeLink app—ideal for smart homes, offices, and industrial environments.
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Ai-Thinker LoRa RA-02 SX1278 Wireless Transmission Module
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Ai-Thinker LoRa RA-02 SX1278 Wireless Transmission Module

Technical Highlights:

  • Chipset: Semtech SX1278

  • Frequency: 433 MHz

  • Modulation: LoRa

  • Interface: UART / SPI compatible

  • Operating Voltage: 3.3V

  • Compact and lightweight PCB design

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1-channel 12V relay module
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1-channel 12V relay module

1-channel 12V relay module for controlling AC/DC devices with Arduino, Raspberry Pi, and microcontrollers.

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Ai Thinker SX1278 LoRa RA-01 Wireless Transceiver Module with Baseboard
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Ai Thinker SX1278 LoRa RA-01 Wireless Transceiver Module with Baseboard

Technical Specifications

  • Chipset: Semtech SX1278

  • Frequency: 433 MHz

  • Modulation: LoRa / FSK / GFSK / OOK

  • Sensitivity: Up to −138 dBm (LoRa)

  • Transmission Power: Configurable (max up to +20 dBm)

  • Interface: SPI

  • Operating Voltage: 3.3V

  • Dimensions: Compact form factor with baseboard breakout support

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Techtonics 1-channel 5V 10A relay control board module
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Techtonics 1-channel 5V 10A relay control board module

Techtonics 1-channel 5V 10A relay module for Arduino, Raspberry Pi, and microcontroller control of AC/DC devices.

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PCF8574T I2C I/O Extension Board
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PCF8574T I2C I/O Extension Board

PCF8574T I2C I/O extension board for expanding 8 digital I/O pins on Arduino, ESP32, and Raspberry Pi projects.

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AT24C256 I2C EEPROM memory module
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AT24C256 I2C EEPROM memory module

AT24C256 I2C EEPROM memory module with 256 Kbit storage for Arduino, ESP32, Raspberry Pi, and embedded projects.

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4x4 matrix membrane keypad
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4×4 matrix membrane keypad

4x4 matrix membrane keypad with 16 keys for Arduino, Raspberry Pi, and microcontroller input projects.

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1x5 tactile keypad switch module
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1×5 tactile keypad switch module

1x5 tactile keypad switch module with five clicky buttons for Arduino, Raspberry Pi, and microcontroller projects.

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bi-directional logic level converter
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bi-directional logic level converter

Bi-directional logic level converter for safe 3.3V ↔ 5V signal translation in microcontroller projects.

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