Feature:1. Advanced For ESP32-WROOM-32E Module: The relay module board features a built in, mature, and stable for ESP32-WROOM-32E module with a large capacity of 4M Byte Flash memory. This module's I or O ports and UART programming download port are all accessible, making it convenient for secondary development and customization.2. Versatile Power Supply Options: Equipped with a onboard DC 5V to 3.3V power circuit, the 16 channel relay module supports power input ranging from DC 5-12V. This versatile power supply feature ensures compatibility with various power sources, providing flexibility in use.3. Reset And Programmable Buttons: The smart home relay module includes an onboard RST reset button and I00 programmable button for ease of operating and control. These buttons offer convenient options for device reset, programming, and user interaction.4. Good Compatibility: The for ESP32 module on the relay development board is compatible with the for IDE compilation tool, offering a familiar and user friendly environment for development. Users can leverage the reference programs available in the for development environment to streamline their projects.5. 16 Channels: The relay board is equipped with 16 channels of 5V relays that output switch signals, making it suitable for controlling loads with operating voltages up to AC 250V or DC 30V. This feature enables users to efficiently control various devices and systems, providing a reliable solution for automation and remote operating applications.Specification:Item Type: 16 Channel Relay ModuleMaterial: PCBPower Supply: DC5-12VOverall Description: DC powered for ESP32 16 channel relay module equipped with for ESP32-WROOM-32E WiFi and BLE module, all I or O ports are fully expanded, supports DC5-12V power supply. Suitable for ESP32 secondary development learning, wireless control in smart home applications..Package List:1 x 16 Channel Relay Module2 x 10 Pin Double Rows1 x 6 Pin Single Row1 x Accessories