The KingMeter LCD Display comes with the 3 buttons control panel. Disclaimer: This display is intended to be used with DJ Bikes e-bikes, and we cannot guarantee compatibility of this display with third-party e-bikes. Controller specification: Brushless Intelligent Motor Controller Model: WZKD4820KA-HP-Z2 Working voltage: 48V Over current protection: 20A Under voltage protection: 41.5±0.5V Function: with brake light