Before you can read the datasheet, you have to find the right one. A search for "9892" often yields mixed results. In the context of electronics, this usually points to one of two things:

Searching for "my 9892 datasheet" usually leads to confusion because of overlapping part numbers. However, by identifying your package type (8-pin DIP for optocoupler vs. micro-BGA for audio), you can quickly find the correct specifications.

This dimmer is ideal for resistive loads (heaters) and universal motors (brushed AC motors). It is not suitable for capacitive or inductive electronics like CFL bulbs, ballasts, or electronic transformers.