48V -72V Multifunction Voltmeter Thermometer Speedometer

Specifications Power supply 48V 60VWorking temperature 30 80Power consumption 0 3W 0 9WPcb size 105 53mmLcd size 86 40mmScreen color full color Instructions 1 There is a protective film you need to tear up the LCD before boxing 2 Do not reverse the positive and negative power meter please note that across the board to avoid a conductive material in order to avoid a short circuit occurs 3 human safety voltage of 24V the wiring process please power off or wear gloves operation Wiring Positive power supply Red Negative power BlackHeadlight signal BlueLeft turn signal Orange Right turn signal BrownSpeed signal Green Display speed adjustments Because the manufacturers of motor poles tire diameter difference on our board increased the potentiometer yellow can select devices calibrated display speed when there are differences between display speed and drive speed please adjustment potentiometer As Follows 1 clockwise speed2 counterclockwise slow down Battery voltage universal knowledge Ordinary lead acid battery is the smallest single cell voltage 2V about undervoltage 1 75V be full is 2 4V for example 48V under voltage is 42V full power is 57 6V It has been observed the actual full power generally only to about 55V Connection speed lines Now most electric car motors are brushless motor the speed of the current analog pointer instrument display is driven directly by the motor phases pointer coil produces a magnetic field