Philmore Class 2  12V AC  60Hz Power Supply Transformer With LED Indicator Light ; 48-1220 Compact transformer that takes in 120VAC, 60Hz, 30W power and outputs 12VAC, 20VA (volt-amperes) with 1666mA of current. Ideal for powering security cameras, alarm systems, gates, thermostats, electric locks, and more. Features a standard 2-prong North American type plug for an outlet, and has dual screw terminal outputs to which you connect your wire leads, which in turn plug into any device that uses the designated power rating. Input power: 120 VAC, 60Hz, 30W; Output power 12 VAC, 20VA, 1666mA. Dimensions: 3.2 x 2.2 x 1.9" / 81 x 55.5 x 48 mm