Uxcell Optocoupler Driver Relay Module Product name : optocoupler Driver relay module; relay Type : srd-12vdc-sl-c Coil Voltage : dc 12V; pole Number : 1 channel Load : 10A, AC 250V/125V, dc 30V/28V; overall size : 5 x 2.6 x 2Cm/2" x 1 inch x 0.78"(L*w*h) Materials : metal, plastic, electric parts; main color : Red Weight : 15G; Package Content : 1 x optocoupler Driver relay module