Lots to unpack here. Firstly, Domina Lynx gives good advice, especially about safety. Electroplay, especially at higher intensities, certainly falls under RACK and requires knowledge.

Your question wasn't entirely clear. Are you interested in this solely on the erotic/teasing/edging end of the scale or did you want to explore the pain/punishment/torture end of the spectrum as well? The instant intensity of electroplay can be an interesting counterpoint to the eroticism of other forms of teasing or edging. Having a Domme go back and forth between the two can be amazing!

I've experienced both (including an Erostek at it's highest setting......accidentally but that's another story ) and while I really enjoy electro being part of a session it can certainly fall under the "love to hate" heading sometimes.

The best advice I can give is find a Domme with experience and a good selection of equipment. A good indication of her interest and experience is the gear she lists on her website and how prominently it is featured as an scene interest or in her videos. Dommes like Miss Grey of mygreyheaven.com , Elise Graves of Bondageliberation.com and Troy Orleans all seem to be enthusiastic aficionados of electroplay......although I'm sure there are many equally talented Dommes out there.

Power boxes by Folsom, PES or Erostek (probably the gold standard) are some names to look for. There are a bewildering array of attachments that can be used with these for cock and ball, anal or nipple play in addition to sticky pads. Nipple play is somewhat controversial as it violates the "nothing above the waist" rule for safety (concern over heart interaction). Some feel bipolar nipple clips are safe as the current only passes for a fraction of an inch through the nipple between the two sides of the clip but as always.....RACK. Do your research and make your own judgement with regard to safety

Electroplay can be amazing on both the pleasure and punishment ends of the spectrum but it requires good equipment and a skilled operator.

One final piece of advice.....You will NOT be able to control your reactions/movements if you choose explore higher settings. Secure bondage and a rubber gag that is mindful of this can actually be an aid to safety.

Good Luck!