The EJ884AL is a Hammond power transformer that converts a voltage of 120 volts AC to 12 volts AC/2.5 Amps. It is UL (Underwriters Laboratories) approved, meaning it meets the safety requirements defined by the UL Standard for Safety. This transformer can be used in a variety of low voltage, general purpose applications, such as door bells, door chimes, burglar alarms, power supplies, lighting fixtures, and other uses. It is a low profile, open style transformer with a built-in secondary overload protection feature.