Controller Type: Sine controller with waterproof connectors. Fully waterproof connectors ensure maximum durability in all weather conditions. High-performance wires and waterproof interfaces help minimize failure rates for long-term use. Wiring color definitions: - Black long wire: motor wire - Red and black single large wire: power cord - Black long wire (fine hole): one for four / one for five (9 cores) - Black line and red: light line - Black wire and yellow: power assist sensor wire Electrical specifications: - Maximum current: 25±1 A - Rated voltage: DC 36V / 48V - Speed setting: 1-4.2V - Rated current: 12A - Brake input: Low level - Low voltage: DC 30/40±0.5V - Applicable motor: usually 750W motor Compatibility and usage notes: - Note: It must be used with products that share the same communication protocol. It must be used with a sine brushless motor. It is only compatible with KT series instrument products. Use scenarios: - Outdoor e-bike or vehicle systems using a sine brushless motor up to 750W, where weather resistance and long-term reliability are critical. - 36V/48V systems in KT series instrument setups requiring a durable, waterproof connection and robust wiring. - Field testing or industrial applications that require clean wiring with a power assist sensor connection and multiple-core cables for reliable control.