8 Channel Relay Module Extension Board for Arduino Descriiption: Model: N/A. Quantity: 1pcs. Color: Black + Blue. Weight: 4.16 oz (118 g). Material: PCB + Relay module. Dimensions: 3.58 in x 2.83 in x 0.67 in (9.1*7.2*1.7cm). Features 8 channel, with high-current relay: AC 250V 10A; DC 30V 10A. Independent wiring in contact area, makes it safe and reliable. Standard interface that can be expanded in a variety of development boards. Equipped with screw holes for easy installation. Applicable to a variety of platforms including Arduino / AVR / ARM/51. It is able to control various household appliances, and other equipments with large current.