Uxcell Optocoupler Driver Relay Module Product name : optocoupler Driver relay module; relay Type : srd-05vdc-sl-c Coil Voltage : dc 5V; pole Number : 2 channel Load : 10A, AC 250V/125V, dc 30V/28V; overall size : 4.5 x 4 x 1.8Cm/1.8" x 1.6 inch x 0.7"(L*w*h) Materials : metal, plastic, electric parts; main color : Blue Weight : 30G; Package Content : 1 x optocoupler Driver relay module