A 0-12 Volt, 740 milliampere (mA) transformer is an electrical device that converts alternating current (AC) from one voltage level to another. Voltage Range: The transformer can output voltages ranging from 0 to 12 volts, allowing for adjustable voltage levels to suit various applications. Current Rating: The transformer can deliver up to 740 milliamperes of current. This rating indicates the maximum current the transformer can supply without overheating or sustaining damage. Overall, a 0-12 Volt, 740 mA transformer is a versatile component used in various applications requiring adjustable low voltage AC power. Please carefully check the product and number of wires.