The NX-216E is a microprocessor-controlled "Smart Module" 16-zone expander for the NetworX NX-8 and NX-8E control panels from GE Security. Up to five NX-216E zone expander modules can be added to the NX-8 control panels with a maximum zone count of 48 zones. Up to 23 expanders can be added to the NX-8E controls with a maximum zone count of 192 zones. Each expander has an optional tamper switch and power isolator making it ideal for use in a remote location. It is easy to use, and features a modular design.