DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module for Arduino (Pack of 5) auspowers_batchone [Replacement Ear mold Ear bud

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DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module for Arduino (Pack of 5) auspowers_batchone [Replacement Ear mold Ear budDC 1 Channel Optocoupler 3V 3. 3V Relay High Level Driver Module Isolated Drive Control Board 3V 3. 3V Relay Module for Arduino (Pack of 5) We are Songle original relay Size: 70mm X17mm X20mm (LxWxH) Main chip: EL817, SRD DC03V SL C Work voltage: DC 3V 3. 3V Control 10A 250VAC, 10A 30VDC load Features Instructions with the signal output; Signal input port can connect microcontroller IO port, high level signal Double power selection design anti