This is the 12V relay most commonly used switching device in electronics. It is commonly used in Home Automation projects to switch AC loads, To Control (On/Off) Heavy loads at a pre-determined time/condition, Used in safety circuits to disconnect the load from supply in event of failure and much more. The specifications of the relay is given below: 12V SPDT Relay Specifications: Trigger Voltage (Voltage across coil) : 12V DC Trigger Current (Nominal current) : 100mA Maximum AC load current: 7A @ 250/125V AC Maximum DC load current: 10A @ 30/28V DC Maximum switching: 300 operating/minute (mechanically) Product Description To use this relay module first you have to decide whether you want to connect or disconnect your load when relay is operated. Connect the load across Common and NC terminal if you want to disconnect the load when relay is operated or across Common and NO terminal if you want to connect the load when relay is operated. As the coil trigger voltage is 5V, you can connect it to any GPIO pin of 5V operatingArduinolikeUNOorMEGAor you can use any battery above 5V to operate the relay too. Applications: Mainlyused in switching circuits. Home Automation projects to switch AC loads In ControllingHeavy loads at a pre-determined time/condition Safety circuits to disconnect the load from supply in event of failure Used in Automobiles electronics for controlling indicators, glass motors etc. Note: Appearance might be difference from the picture shown. Package Contents 1 12V SPDT Relay