16 Channel 12V Relay Module Shield Expansion Board with Optocoupler for Arduino Raspberry Pi DSP AVR PIC ARM 12V 16-Channel Relay interface board, and each one needs 15-20mA Driver Current Equipped with high-current relay, AC250V 10A ; DC30V 11A Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP432, TTL logic) Indication LED's for Relay output status Widely used for all MCU control, industrial sector, PLC control, smart home control