Product Name : Relay Shield Module;Fit for : for Arduinos Rated Coil Voltage : DC 5V;Rated Voltage & Current : 10A 250VAC, 10A 125VAC,10A 30VDC, 10A 28VDC Total Size : 4 x 2.8 x 2cm/1.6" x 1.1"x 0.78"(L*W*H);Materials : Plastic, PCB, FR4 Net Weight : 15g Package Content : 1 x Relay Shield Module