Tiny Contacts

An ultra-compact 4-channel SMD relay board engineered for space-constrained IoT and home automation setups. Designed to interface low-power microcontrollers (3.3V/5V) with medium loads seamlessly.

🛠️ Key Features

• Ultra-Compact Footprint: Only 42 mm x 38 mm, perfect for custom enclosures and tight spaces.
• 4-Channel Relay Control: Built with Omron G6K-2F-Y low-signal SMD relays for fast, reliable switching.
• Integrated Driver IC: Powered by the ULN2003A Darlington transistor array, protecting MCU GPIO pins from inductive kickback.
• Universal MCU Compatibility: Fully compatible with ESP32, ESP8266, Arduino, ATtiny, and STM32.
• Status LEDs: Onboard indicators for power state and channel activity monitoring.

📊 Technical Specifications

• Board Dimensions: 42 mm x 38 mm
• Operating Voltage (VCC):5V DC
• Logic Input Level: 3.3V – 5V TTL
• Relay Type: Omron G6K-2F-Y (SMD, Low-Signal)
• Driver IC: ULN2003A
• Channels: 4 Independent Relays