They are safe to use because they only need low voltage.
它们使用安全，因为它们只需要很低的电压。
For example, a lab may use different standards for voltage, current, and frequency.
例如，一个实验室可能对电压、电流和频率采用不同标准。
Have anti-skid alarm and low voltage alarm functions, use can be more at ease;
同时有防撬报警和低电压报警功能，使用起来可以更安心；
The utility model provides a low-voltage joint with low connection resistance and easy use.
本实用新型提供了一种连接电阻低，使用方便的低压接头。
Check the voltage whether is normal or not: use the ammeter or testing pen.
电源电压是否正常：用仪表或探笔测试。
Check the voltage whether is normal or not: use the ammeter or testing pen.
电源电压是否正常：用仪表或探笔测试。
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