SODIAL(R) Surface Mounted Wired Metal Iron Gate Magnetic Contact Switch Alarm Product Name : Door Magnetic Switch;Material (external) : Metal;Model : MC-58 Color : As Picture Shown;Switch Type : NO;Mount Type : Surface Mounted Fitness : Iron Gate;Operating Distance : 40~60mm;Rated Current : 500mA Rated Power : 10W;Voltage : 12V;Size : 10.5cm/4.1'' x 1.6cm/0.6'' x 1.5cm/0.6'' (L*W*H) Cable Length : 21.5cm/8.5'';Weight : 185g;Package Content : 1 x Door Magnetic Switch,4 x Screws