5V 12V 1/2/4/6 Channel Relay Board Module Arduino Raspberry Pi PIC

About this deal

A relay board module is a popular component for makers, hobbyists and electronics enthusiasts who need to control mains or high-current loads from a low-power microcontroller. Available in 1, 2, 4 or 6 channel configurations and operating at 5V or 12V, any logic-level signal from 3V up to 30V can be used to activate a relay, meaning it can be controlled directly by microcontroller TTL logic. It works with PIC, AVR and ARM microcontrollers, Raspberry Pi, Arduino outputs and other compatible boards. Each relay is an SPDT type, suited to switching high-current loads across both AC and DC circuits, including motors, lights, pumps and contactors. Each channel provides normally-open and normally-closed contacts, giving you flexibility over how the circuit behaves when the relay is triggered. Power can be supplied from an external source or from the microcontroller board itself, though the maximum current draw of the host board should be taken into account. This makes these modules a practical, low-cost choice for home automation, test rigs and prototyping projects.