10PCS Relay Module With Optocoupler High Or Low Level Trigger Expansion Board For Raspberry Pi Arduino

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12V 8 Channel Level Trigger Optocoupler Relay Module

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24V 8 Channel Level Trigger Optocoupler Relay Module

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20pcs 1 Channel 12V Level Trigger Optocoupler Relay Module

1 Channel 12V Level Trigger Optocoupler Relay Module

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MCP23017 I/O Expansion Module I2C IIC Supports For Arduino Raspberry Pi Micro:bit STM32

Trigger Drive Module Control Panel MOS Optocoupler Expansion Touch Switch Fast Charging Motor Kit Machinery PWM Regulator