SL版具有单功能，在低电流或低电压的情况下，信号输出具有PDT。

The SL version has one function, either undercurrent or undervoltage, with a PDT for signal output.

youdao

SL版具有单功能，在低电流或低电压的情况下，信号输出具有PDT。

The SL version has one function, either undercurrent or undervoltage, with a PDT for signal output.

youdao