KT 7A controller has the characteristics of more stability, high efficiency, low current consumption and long service life. The brushless motor controller can provide steady speed and sensitive control of braking and direction changes. KT LCD4 display panel is only applicable to KT series controllers, not applicable to other controllers, which allows you to view data intuitively. This speed controller kit is suitable for 36V/48V 250W motors and suitable for DIY electric bicycles. Made of high-quality aluminum alloy and plastic, it is durable and has a long service life. Item Type: Electric Motor Controller Kit Material: Aluminum Alloy + Plastic Product Color: As Pictures Shown Controller Box Size: Approx. 8.5×5.2×3.1cm / 3.3×2.0x1.2in Product Weight: Approx. 528g / 18.6oz Rated Current: 7A Rated Voltage: DC36V / 48V Speed Setting: 1-4.2V Low Voltage Protection: DC30 / 40±0.5V Maximum Current: 15±1A. 1 x Display Manual. 1 x Thumb Throttle. 1 x Speed Assist Magnetic Point. 1 x Wiring Diagram. Instead of leaving negative/neutral feedback or opening a dispute. Our listing price includes the value of goods, packaging cost, and export. Please check with your country’s. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.