The LE-SS and LE-SSR are vandal and weather resistant sub stations for Aiphone's LEM, LEF, LAF-C, LDF, AP-M and MP-S systems. The units are constructed of 12 gauge stainless steel. They can be flush mounted into a standard 2-gang box, or surface mounted into the SBX-2G. Each unit includes tamper proof screws and a tool for installation. The LE-SS has a stainless steel mechanical call button, and the LE-SSR features a red mushroom type button. Communication at the master is push-to-talk or handset, and communication at the sub is hands free.