Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HMP45DUS-442C-LM found under Sensor Ambient Temperature by Vaisala Meteorological Systems Inc. The National Stock Number assigned to this part is 6685015529776, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HMP45DUS-442C-LM.