PC-359B (Add LE Series stations and speakers to NEM/NDR) Updated on February 19th, 2026 Instructions for the PC-359B adaptor and how to connect it to third party speakers and LE Series substations to NEM and NDRM Series answering stations.Download Download Download Download Specification Sheets PC-359B (Add LE Series stations and speakers to NEM/NDR) NEM and NDRM Modifications NEM and NDR Wiring Diagrams NDR Instructions NEM Instructions NEM and NDRM Substations and Door Stations NEM and NDR Long Distance Station Instructions intercom integration