Feature: 1. This is a 36V 800W electric scooter electric bicycle brush dc motor speed controller. 2. Applicable motor: 48V 350W-500W brush motor. 3. Controller wiring instructions: In order to work, the motor can be connected to at least 4 joints. 4. Simple and convenient for installation, easy to use and operate. 5. Suitable for electric tricycle, scooter, etc. Specification: Condition: 100% Brand New Item Type: Brush Motor Controller Model: YK31C Material: aluminum Color: as picture shown Size: approx. 9x6.5x4cm/3.5x2.6x1.6inch Rated power: 800W Working voltage: 36V Under voltage: 31.5 + / - 0.5 W Shifter: 1-4V Brake handle: the machine runs normally Applicable motor: 48V350W-500W brush motor Applicable for: electric tricycle 48V500W domestic trade thread head: 4 head 48V500W foreign trade thread head: 8 head Package List: 1 x Brush Motor Controller Note: If the power cord is not connected correctly, it will burn out.