5V 4 Relay Module

5V 4-channel relay module for switching AC/DC loads from microcontroller outputs. The **5V 4-Channel Relay Module** is an electronic switchboard that lets a 5V microcontroller safely control up to four high-voltage, high-current appliances (up to 250V AC or 30V DC at 10A) simultaneously. When a channel receives a digital trigger signal, an internal electromagnetic coil energizes and mechanically flips an isolated switch. Each of the four channels features a Common (COM), Normally Open (NO), and Normally Closed (NC) screw terminal, allowing you to choose whether a connected circuit completes or breaks when the relay activates.