This relay module can be controlled at 5V. It can drive a maximum of 10A under 250V AC and 10A under 30V DC Standard interface that can be controlled directly by a microcontroller Indicator light to indicate whether the relay conducts or not to work in safety The 4 channels have their own interface which can be directly controlled by a wide range of microcontrollers such as AVR, PIC, ARM, PLC, etc. This thus makes it possible to control various devices and equipment operating with strong currents Widely used for all MCU controls, in the industrial sector, PLC controls, home automationDC 5V 8-channel relay module with optocoupler 10A available switching capacity despite small size design for high density PC. board mounting technique. UL, TUV recognized. Selection of plastic material for high temperature and best chemical solution performance. Types sealed available. Single relay magnetic circuit to meet the low cost of mass production. Widely used for home appliance, office machine, audio, equipment, automobile , etc. (Remote control TV receiver, monitor display, application of current high current use of audio equipment.) Product description: Product Name: 8 Channel Relay Module; Output channel: 8 Power supply: 5V; Charging Voltage: AC 250V 10A, DC 30V 10A Total Size: 137mm x 56mm x 17mm / 5.4" x 2.2" x 0.7" (L*W*H ); Mounted Hole Size: 3mm / 0.12" Mounted Hole Center Distance: 132 x 50mm / 5.2" x 2" (L*W); Material: Electrical Part Weight: 122g; Package Content: 1 x 8 Channel Relay Module