Drok manufactures electronic modules including digital multimeters, voltage converters, battery monitors, and audio amplifiers for DIY and industrial applications.
Ruam is a specialized manufacturer and retailer of electronic components and testing instruments, catering primarily to DIY enthusiasts, engineers, and technicians. Operating under Guangzhou Long Qi Trading Co., Ltd., the brand focuses on providing affordable yet functional solutions for power management and audio systems.
Their extensive product catalog includes DC-DC buck and boost converters, digital multimeters, USB testers, battery capacity monitors, and audio amplifier boards. Drok products are widely used in custom solar power setups, automotive electronics, and home audio projects. The brand is known for its compact digital panel meters and versatile power supply modules available through major e-commerce platforms.
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Many Drok monitors have a calibration menu (often menu 5 or 6). You must provide a precise reference voltage (e.g., exactly 20V) to the unit while in this mode to calibrate it correctly. Refer to your specific model's manual for the exact button combinations.
A buck converter steps down voltage (e.g., 24V to 12V), while a boost converter steps up voltage (e.g., 12V to 24V). Some Drok modules are 'Buck-Boost' converters, capable of doing both based on the input.
Yes, most Drok amplifier boards are designed to work with 4-ohm to 8-ohm speakers. Check the specific wattage and impedance ratings of the board to ensure compatibility with your speakers.
The monitor must be set to the correct battery type (Lithium, Lead-Acid, or LiFePO4) and series number (e.g., 3S, 12V) in the settings menu. If these parameters do not match your actual battery bank, the percentage calculation will be incorrect.