‘-This relay module is 5V active low. -This module can be controlled directly by a wide range of microcontrollers such as for 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.