About Products: The handle is Hall speed measurement, compatible with any brand of controller And regardless of sine wave/square wave Voltage: 36V/48V/60V universal Material: aluminum alloy material + rubber Size: 195*45mm Type: A (key style); B (button style) setting of display press M button and at same time open power lock, now display lights and numbers shines, and press m button you will can set the display . short press M button you can switch the setting item, long press it you can set the data bellow p01=voltage, 36v,48v,60v, default setting 48v, p02=speed ratio=0.2-1.5, default setting =1, real speed / current speed is the ratio u should set, for 36V bike when phase wire voltage is 18V , default setting speed = 30km/h for 48V bike when phase wire voltage is 24V , default setting speed = 35km/h for 60V bike when phase wire voltage is 30V , default setting speed = 40km/h p03=range ratio=1-1.3, default setting =1 p04=speed testing mode, 1=VOL, phase voltage speed testing, , 2=hall, hall speed testing, default setting it is 1 if phase wire voltage signal, the rim and magnetic poles setting will not work. p05= rim size , 8inch, 10, 14,16,18,20,22,24,26,28,29inch(can work with phase voltage speed testing), default setting 14inch, p06= magnetics poles number (if motor with external speed testing hall built outside, it =1, means only has single piece magnetic poles, usually it is 1-6 if motor has speed testing hall built inside, now it means magnetic poles pieces numbers. it is 10-30pairs, it motor takes phase wire voltage speed testing, this will not work) default setting =1 , press button will add one p07, mile/h or km/h, 1=metric, 2=mile, default setting it =1 or it is P07 battery voltage ratio P08 =0, 3 gears function is forbidden, p08=1 means 3 gears available and power on it is gear one, short press M button will exchange gears, long press M button will switch betteen single trip/odo, and battery voltage, p08=2 means power on it is gear 2. p08=3 means power on it is gear 3. attention please: 1. for all the display which takes phase wire voltage signal, the speed indication will have little deviation, 2. if your motor is brushless gear motor, when sliding the speed indication may be zero. if brushless gearless motor, this phenomemon will not happen Shipment includes: 1 set of handles (one on each side) 1 set of installation kit