This breakout board helps you switch AC devices. It has 4 channels that it can switch. It is compatible with Arduino, AVR, PIC and other micro-controllers. The relay operates on 5V DC. The label on the board is wrong, it should be 5V instead of 12V.
Relay board module is used for controlling higher current loads from your microcontroller development board, PC parallel port or Arduino Uno. This board has four (4) on-board relay which can switch up to 7Amps. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The relay is safely driven by ULN2003 IC hence your input device, such as Arduino, is protected from relay circuit and IC will further protect your microcontroller from relay kick back. This is a 12V 4-Channel Relay interface board which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, 8051 and so on.
- Relay terminals are accessible with screw terminals
- The on board relay can handle current upto 10A