Y42A-8 Channel Relay Module 30A DC7-28/5V WIFI Bluetooth Relay Module ESP32-WROOM Development Board

Y42A 8-Channel 30 A Relay Development Board

The Y42A is an eight-channel relay control board built around an ESP32-WROOM-32E module. It combines Wi-Fi and Bluetooth-capable control hardware with high-current relay outputs for prototype verification, automation and IoT control projects.

Board Features

• 8 onboard relay channels with a listed 30 A relay rating.
• ESP32-WROOM-32E module with 2.4 GHz Wi-Fi and Bluetooth capability.
• All available controller I/O is broken out for development access.
• Onboard programmable buttons and status LEDs.
• DC 7 to 28 V input or regulated 5 V supply option as identified by the board design.

Development and Integration

• Suitable for custom firmware developed with ESP-IDF or Arduino-compatible ESP32 toolchains.
• Relay contacts are electrically separate from the low-voltage controller side, but enclosure, wiring protection and load-specific safety measures remain the installer's responsibility.
• Confirm supply polarity, relay contact ratings and the electrical characteristics of each connected load before use.
• Do not use the headline relay-current figure without checking the voltage, load type, duty cycle and thermal conditions.

Package Contents

1 x Y42A 8-channel relay development board kit as shown. Power supply, enclosure, wiring and external loads are not included unless explicitly stated.