The ATV aD-H14 is an 14" electronic hi hat with a unique optical sensor. Its very dynamic, quiet, and feels great. This unit works best with the ATV AD5 but also works with Pearl Mimic, and Roland TD-50 with some settings changes. The pairing of this hi hat and multiple modules seems to be a hit in 2018-2019 as this has become a best seller. If you have a compatible module you should check it out. Setup guides are below. 

Hi Hat Stand Not Included

Setup Guide for TD-50 

Setup Guide for Mimic Pro