Relay Module 2 Channel 3V 3.3V Dual High Low Trigger Arduino ESP8266 with optocoupler isolation protection.
Specification : -Relay Working Voltage : 3V -Relay Load Voltage-Current : 125VAC-250VAC/10A or 28VDC-30VDC/10A -Optocouple type : PC817 -Input Tiggrer type : High or Low