The NHR-8A-L is identical in all ways to the NHR-8A except that the NHR-8A-L has a locking cord that has to be reset to stop the call.
NHR-8A(-L) Technical Specifications
NH-1SA-A Technical Specifications
NH-2SA/A Technical Specifications
NHR-30K Technical Specifications
NHR-3TS Technical Specifications
NHR-4A Technical Specifications
NHR-7A Technical Specifications
NHR-8A(-L) Technical Specifications
NHR-8C Technical Specifications
NHR-DP Technical Specifications
NHR-DPA Technical Specifications
NHR-SP Technical Specifications
NHX-30G Technical Specifications
NHX-50M Technical Specifications
NHX-80X Technical Specifications
NHX Wire Specifications