• This relay module is 5V active low.
• It is an 8-channel relay interface board, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc. 
• It is also able to control various appliances and other equipments with large current.
• Relay output maximum contact is AC250V 10A and DC30V 10A.
• Standard interface can be directly connected with microcontrollers. 
• Red working status indicator lights are conducive to the safe use.
• Widely used for all MCU control, industrial sector, PLC control, smart home control.
• Working voltage: 5V
• Channel: 8 channel
• Item size: 13.4 * 5.3 * 1.7cm