A spare plastic enclosure is available for those installations where additional xGen zone and/or output expanders are required. The xGen NXG-001 plastic enclosure includes a DIN rail for mounting the expanders and a tamper switch. The cover of the enclosure can be removed by releasing the two screws using the supplied allen key. To install an expander module, release the locking tab(s) and place it on the DIN rail. Push the locking tab(s) to secure the expander module.