2 Channel 5V Relay Module for STM32 4G Network 4M Byte Flash Large Capacity Programmable Secondary D

Feature: 1. MATURE AND STABLE MODULE: This module support I/O port as well as UART program download port all pinout, programmable keys and reset keys, mature and stable 2. APPLICABLE SCENARIO: This relay module is suitable for secondary development learning, smart home, control, etc. If you have related needs then this one is suitable for you 3. LARGE CAPACITY: This relay module has a large enough capacity of 4M Byte flash, you can use with the actual situation, helps a lot, useful and practical 4. OUTPUT SWITCHING: This relay board contains 2 way 5V relay with output switching, suitable for controlling loads with operating voltage of AC250V or DC30V or less 5. APPLICABLE SCENARIO: The relay board is equipped with and BLE modules, Air780e module, suitable for secondary development learning, ABS material for impact and scratch resistant Specification: Item Type: 2 Channel 5V Relay Module Material: ABS Application: Suitable for secondary development learning Package List: 1 x Relay Module 3 x Accessories