<https://robu.in/product/12v-6-channel-with-light-coupling-relay-module/#product>
<http://schema.org/description>
"Operating Voltage: 12V DC\nEquipped with high-current relay 10A@250VAC / 10A@30VDC\nIt can control both AC and DC appliances such as Solenoids, Motors, lights, fans, etc\nHigh-quality screw terminals (Terminal Block) provided (C, NC, NO) for quick and easy connection\nFreewheeling diode to protect your microcontroller\nInput Signal Pin connected to Burg stick for easy accessibility\nLED Status indicators to indicate the relay ON/OFF status\nMounting holes provided"
<https://robu.in/product/12v-6-channel-with-light-coupling-relay-module/>