上海四达电子的SM-1107B是一款专为教育和工业应用设计的直流安培表。该产品采用先进的电路设计，具备高精度和高稳定性，能够准确测量直流电流。其量程范围为0~500mA，精度达到±2.5%，能够满足多种电流测量需求。

SM-1107B的设计注重用户体验，操作简单，读数清晰。其外壳坚固耐用，适合在各种环境下使用。此外，该产品还具备良好的抗干扰能力，能够在复杂的电磁环境中保持稳定的工作状态。

在教育领域，SM-1107B是理想的实验仪器，可以帮助学生更好地理解和掌握直流电流测量的原理和方法。在工业领域，它可用于设备调试、电流监测等场景，为生产过程提供可靠的数据支持。

The SM-1107B from Shanghai Sida Electronics is a direct current (DC) ammeter designed for educational and industrial applications. It features advanced circuit design, high precision, and high stability, ensuring accurate DC current measurements. With a measurement range of 0 to 500mA and an accuracy of ±2.5%, the SM-1107B can meet a variety of current measurement requirements.

The design of the SM-1107B focuses on user experience, with simple operation and clear readings. Its robust casing makes it suitable for use in various environments. Additionally, the product has strong anti-interference capabilities, allowing it to maintain stable operation in complex electromagnetic environments.

In the educational field, the SM-1107B is an ideal experimental instrument that helps students better understand and master the principles and methods of DC current measurement. In the industrial field, it can be used for equipment debugging, current monitoring, and other scenarios, providing reliable data support for the production process.