Manufacturer of intelligent LCD displays, motor controllers, and electronic components for electric bicycles and light electric vehicles.
DMHC (Dong Mei He Chuang) is a specialized manufacturer of electronic components for the electric bicycle (e-bike) market. The company produces intelligent control systems, including the popular TC series LCD displays (TC480, TC488, TC490) and durable motor controllers.
Designed for compatibility with various e-bike motors, DMHC interfaces allow riders to monitor speed, manage pedal assist (PAS) levels, and track battery life. Their products are commonly used in both commercially manufactured e-bikes and DIY conversion kits. The manuals provided here assist with installation, wiring diagrams, and configuring settings such as wheel diameter and voltage limits.
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On most DMHC displays like the TC480 or TC488, you can reset the specific trip mileage by long-pressing the designated key (often the 'Down' or 'Mode' button) for about 2 seconds while in the Trip view interface.
DMHC displays show error codes to diagnose system issues. Common indicators include symbols for Motor Fault (Hall sensor issue), Controller Fault, Throttle Fault, or Brake Abnormalities. Consult the specific model manual for the numeric code definitions.
To ensure accurate speed and distance readings, the wheel diameter must be set correctly. Typically, this involves holding specific buttons (e.g., Up and Down simultaneously) to enter the settings menu, where you can select the correct wheel size (e.g., 26 inch, 700c).
Many DMHC displays support multi-voltage systems, commonly adapting to 24V, 36V, or 48V lithium battery setups. The voltage selection often needs to be configured in the system settings during installation.