This is a 4 Channel Isolated 5V 10A Relay Module Opto-coupler and Relay output maximum contact is AC250V 10A and DC30V 10A. This relay module features 4 x 5V relays rated at 10A/250V each. It is designed to switch up to 4 high currents (10A) or high voltage (250V) loads with the help of microcontrol..
4-Channel 12V Relay Module With Opto Isolated Input is a 4-Channel Relay interface board with optocoupler that allows you to control various appliances, and other equipment’s with large current. It can be controlled directly by Micro-controller (Arduino,Raspberry Pi, 8051, AVR, PIC, DSP, ARM, ARM, M..