The Veris GWN Series platform offers a convenient means for sensing gases in the environment. The GWN is mounted to any single-gang electrical box and wired to the building controller. A single AGxx gas sensor (sold separately) is then installed in the GWN. With this design, there is no need for a costly new installation when a sensor reaches the end of its life. The Veris GWN platform remains installed, and the installer simply opens the GWN housing to replace the modular sensor inside, reducing labor costs and downtime.