DT921系列數(shù)字萬用表產(chǎn)品介紹（中英文）

中文版：
DT921系列數(shù)字萬用表是一款專為電子測量設計的精密工具，適用于工業(yè)維護、實驗室檢測及家庭電器維修等多種場景。該產(chǎn)品采用人性化設計理念，配備清晰易讀的液晶顯示屏，在光線較暗環(huán)境下可通過背光功能提升可視性。測量功能覆蓋直流/交流電壓、電流、電阻等基礎參數(shù)，并配備二極管測試和通斷蜂鳴提示功能，滿足日常檢測需求。

產(chǎn)品外殼采用高阻燃工程材料制造，符合工業(yè)安全規(guī)范要求。防滑紋理握柄設計增強手持穩(wěn)定性，旋轉式量程切換旋鈕操作靈敏，配合防誤插表筆接口設計，有效降低操作失誤風險。內部搭載過載保護電路，在誤接高電壓時可啟動自動斷電保護機制。低功耗電路設計搭配9V通用電池供電，續(xù)航能力可達200小時以上，閑置15分鐘后自動關機功能進一步延長使用周期。

生產(chǎn)廠家深耕電子測量儀器領域二十余年，擁有專業(yè)研發(fā)團隊和完善的生產(chǎn)管理體系。企業(yè)始終堅持"精準測量、品質優(yōu)先"的生產(chǎn)理念，通過嚴格的質量檢測流程確保產(chǎn)品性能穩(wěn)定。目前產(chǎn)品線已覆蓋全球30余個國家和地區(qū)，為電子工程師、設備維修人員等專業(yè)用戶提供實用可靠的測量解決方案。

English Version:
The DT921 series digital multimeter is a precision instrument designed for electrical measurement, suitable for industrial maintenance, laboratory testing, and household appliance repair. Featuring user-oriented design, it incorporates a clear LCD display with backlight function to ensure visibility in low-light environments. The device provides essential measurement capabilities including DC/AC voltage, current, resistance, along with diode test and continuity buzzer functions, meeting routine testing requirements.

Constructed with high flame-retardant engineering plastics, the housing meets industrial safety specifications. Anti-slip texture grip enhances handling stability, while the rotary range selector offers smooth operation. Specially designed test lead jacks prevent incorrect insertion, effectively reducing operational errors. Built-in overload protection circuit activates automatic power-off when high voltage is detected, ensuring user safety. Energy-efficient circuitry powered by a standard 9V battery delivers over 200 hours of continuous operation, with auto-shutdown function activating after 15 minutes of inactivity to conserve power.

The manufacturer specializes in electronic measurement instruments with over two decades of industry experience. Maintaining a commitment to "precision measurement and quality assurance", the company implements rigorous quality control processes to ensure product reliability. Production facilities utilize advanced manufacturing technologies to create durable testing tools. Currently serving professional users across 30+ countries, the product line provides practical solutions for electronics engineers and maintenance technicians worldwide.

（注：中英文總字數(shù)約520字，內容規(guī)避廣告禁用詞匯，未涉及技術標準與認證信息，著重產(chǎn)品特性與用戶價值描述）