11500W brushless controller, equipped with an adapter ring, suitable for 22.2mm / 0.9in, 25.4mm / 1in, 28.6mm / 1.1in handlebars. 2Due to the good heat dissipation function, the internal circuit can be protected to avoid thermal overload. 3The shell is made of highquality metal with groove design, durable enough for long time use. 4Maximum current of the USB charging port is 0.3A, which can charge mobile phones, etc. 5It can provide stable speed and sensitive control of braking and direction changes. Item Type: Controller Material: Aluminum Alloy Controller Box Size: Approx. 17 x 10.5 x 6cm / 6.7 x 4.1 x 2.4in Weight: Approx. 1380g / 48.7oz Voltage: 36V-48V Universal Power: 1500W Current Limit: 50A Thread Color Definition: 1 Red Power Positive 2 Yellow Electric Door Lock 3 Blue Signal Transmit 4 Green Signal Receiving 5 Black Power Negative 6 Brown Bike Light Positive 7 White Bike Light Negative 1 xDisplay 1 x Controller 1 x Manual