Features1Manufacturing Material: The controller housing is made of metal with grooves designed to protect the internal circuitry from thermal overload due to good heat dissipation. 2Brushless Motor Controller: Brushless motor controller provides steady speed, sensitive braking and directional change control. 3High Performance Wire and Sturdy Interface: High performance wire and sturdy interface ensure low failure rate for long term use. Suitable for 36V, 48V, 500W motors. 4Easy Maintenance: For mountain cycle lithium battery modification, easy maintenance, electric cycle and moped modification conversion, greatly improve the fun of riding, suitable for cyclists like challenges. 5Easy to Use: Easy to use and fine workmanship. Without any difficult requirements even though you use it for the first time.SpecificationItem Type: Square Wave ControllerWeight: Approx.303g / 10.7ozMaterial: Aluminum AlloyVoltage: 36V, 48VCurrent: 22AApplication: The product is suitable for 48V or 36V 500W brushless motors, adapted for S866, S900 meters.Package List1 x Controller1 x Manual