Thank you for selecting Aerospace Aviation 360 for 4LS1-4C by Honeywell Sensing And Control under Electromechanical Switches. We are proud to be an ASAP Semiconductor owned and operated website, a leading distributor of aviation and aerospace part numbers like 4LS1-4C. To help us better understand your parts requirements, please fill out an RFQ form for part number 4LS1-4C with your details, and our customer executive will respond to your RFQ in 15 minutes or less.