Features: 1-channel relay interface board which can be controlled directly by a wide range of microcontrollers. Controllers includes Arduino, AVR, PIC, ARM, PLC, etc. It can control various appliances and other equipments with large current. Relay output maximum contact is AC110V ~ AC250V 10A and DC30V 10A. Standard interface can be directly connected with microcontrollers. Red working status indicator for power on indication. Green working status indicator for relay the switch. Widely used for all MCU control, industrial sector, PLC control, smart home control.Specifications: Working voltage: 5V Channel: 1 channels Quantity: 5pcs Product size: approx.44*23*22mm/1.73*0.9*0.86'' Net weight: approx. 65gNote: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.