绝缘体

An optical fiber is a dielectric (nonconductor of electricity) waveguide made of glass or plastic.

光纤是一种介质（绝缘体）波导的玻璃或塑料。

You can also monitor two independent loads by attaching a second optoisolator circuit to the Counter B input of a single DS2423.

也可以通过配另一光绝缘体路到DS2423器B的输出，来监测两负载。