KUNTENG Controller, 36V/48V 500W/750W E-Bike Electric brushless Controller, Square Wave 22A Controller

Amazon.com Price: $40.34 (as of 09/04/2023 11:51 PST- Details)

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Good speed and sensitive control: The controller is a brushless motor square wave controller, which can provide stable speed and sensitive control of braking and direction when working. What’s more important is to be able to work quietly and smoothly.
High-quality materials: The controller is made of aluminum alloy as a whole. The whole controller is sturdy and durable, and can withstand slight bumps and friction; the wire connectors are made of high-quality plastics to ensure that there are few failures during long-term use.