1.CE/ROHS 2.Remote control with 2 speeds 3.Max. ... paper casePower:Working voltage(VDC)68~90VDCRated Power(W)900wx2,DC brushless motorFull charge time( ... Active protection Rider-on detection,Intelligent speed limit,low power, over temperaturerange, over voltage, over load, ... Passive protectionRedundant design control system and power system, internalbreakdown detection and safety alarm & safety ...