Speed Controller SPD-CT811B9 Installation and Wiring

Rated Voltage
 24 Volts
Rated Current
 20 Amps
Rated Motor
 ≤ 350 Watts
Rated Charger
 ≤ 3.0 Amps
Conversion Efficiency
 95%
Under Voltage Protection
 20.5 Volts
Speed Control
 Hall-Effect Turn or Thumb Throttle
Dimensions
 82 mm x 76 mm x 35 mm
Power Connector
Motor Connector
Six Wire Connector
Lock Connector
Power Indicator
Charger Connector
Brake Connector

The power connector should be the last connection made.
The positive battery wire should be fuse protected.