Where is leviton headquarters located? Leviton Manufacturing Co., Inc. Global Headquarters 201 North Service Road Melville, New York 11747 Phone: 800.323.8920Why cant i connect to my leviton app? 1 Make sure you have the latest version of the My Leviton App. ... 2 If available, try using a different mobile phone or tablet running the My Leviton app. ... 3 If you are using an Apple device with iOS 14 or later, you can connect in the W-Fi setting but the My Leviton app is not able to communicate, please ... More items... Why choose leviton law firm? The Leviton Law Firm is a full-service creditors' rights & debt collection law firm. The Leviton Law Firm team has over 30 years of experience handling all types of civil litigation cases. We represent creditors from around the globe on a contingency-fee basis, meaning no collection, no fee.Who is the founder of leviton lighting? The company was founded in 1906 by Isidor Leviton. He began by manufacturing brass mantle tips for the natural gas lighting infrastructure in Manhattan.