4-Channel 5V Relay Module Expansion Board for Arduino (Works with Official Arduino Boards)
Model 3100023 Quantity 1 Color Black + blue Material PCB + plastic Features Equipped with high-current relay AC250V 10A; DC30V 10A; Allows to control various appliances and other equipments with large current Application Standard interface that can be controlled directly by microcontroller (51 AVR ARM + more) Packing List 1 x Relay module expansion board