Specifications:  Color: Blue LED / Red LED  / Green LED.  Material: Plastic.  Length: 2M.  Work Voltage: DC 12~99V.  Without Handle .   Fit for 22mm diameter Handlebar.  Thumb throttle with BLUE/RED/GREEN color LCD display and power switch.  Features:  1: Suitable for all of Lithium battery, LiFePo4 battery and Lead acid battery and  water battery and dry battery.  2: Battery 12V-84V automatically Identify, Throttle DC 0.8-4.2V.  3: Digital voltage display, intuitive and accurate judgment of remaining capacity, mileage.  4: Can indicate vehicle error according to voltage.      Green is for throttle hall signal, red wire is for throttle +5v, black is negative wire; please connect according to controller function wire, You can not just match same color wire, if wrong connected that will damage your controller and throttle. 4 wires: yellow is for voltage display wire, connect with electric bike power positive. 5 wires: blue wire connect with controller power lock output wire, yellow wire connected with controller electric switch input wire power positive,  6 wires ; yellow connected with power positive, blue wire and white is is function wire(can work as reverse switch, horn switch, cruise switch, power lock and so on).  7 wires: yellow connected with power positive, blue is share wire, middle gear for 3 gears , white is high gear, brown is low gear. The above is common wiring way, if need made to order please connect with salesperson.     Battery common sense:  For this display Battery is measured by voltage. this throttle can work for any electric bike under 84v with lead acid battery, lithium battery, water battery, dry batter and so on. The throttle with automatically identify voltage. Due to the difference of battery material, battery conditions ( new or old, ),controller data , the battery voltage reaction will be different, so the data bellow will have deviation. Customers please check according to your battery to get your battery data.      For 12v electric bike, max voltage is about 12.6v, mini is about 9v or higher,  For 24 electric bike, max voltage is about 29.4v, mini is about 21v or higher,  For 36v electric bike, max voltage is about 42v, mini is about 29v or higher,  For 48v electric bike, max voltage is about 54.6v, /58.8v, mini is about 40v or higher,  For 60v electric bike, max voltage is about 72v, mini is about 49v or higher,  For 72v electric bike, max voltage is about 84v, mini is about 60v or higher,  For other electric bike with higher voltage there should be a voltmeter installed.      Package Included:  1 X Thumb Throttle with Power Switch LED voltage display