This is a 24V, 20A, brush / brushed controller. Voltage: 24V, Power: 350W, Electric Current 20A. Case dimensions are 9.3cm x 6.5cm x 3.1cm (LxWxH). These types of controllers are commonly (though not exclusively) used for electric scooters, mobility scooters, dirt bikes, ATVs and other electric powersports or personal transportation products.