Architects' And Engineers' Specifications
The surface-mount single-gang plastic back box shall be Alpha Communications® IHS527
or approved equal. The IHS527
shall be of ABS plastic construction for durability and for unhindered wireless signal transmission. The IHS527
shall be used in wireless applications for mounting the various Emergency Call Stations and their respective Wireless Support Modules. Mounting holes shall be provided on the removable backplate for easy mounting to the finished wall, and on the front for easy mounting of the emergency station to the IHS527
back box. The back box(es) shall be a two-piece construction to allow for quicker battery replacement in the future, without requiring the removal of the emergency call station on the front of the back box. One-piece units without this feature shall not be acceptable.