NX-208E Two-Wire Smoke Loop Expander. The NX-208E is a microprocessor-controlled 2-wire smoke. Expander for the NetworX NX-6, NX-8, and NX-8E control. One NX-208E module can be added to the NX control. Panel with a maximum zone count of 8 zones. Has an optional tamper input making it ideal for use in a remote. Operating Power 12VDC Supplied from NetworX models. NX-6, NX-8, NX-8E, or NX-320E. Supplied power from external. Supplies must be UL listed for Fire or Burglary. Supplied from NetworX models. NX-6, NX-8, NX-8E, or NX-320E; Current. 3.84 Amps MAX (w= ith 8 detectors per loop). 12 Volt Loop = 20 Ohms Maximum. 24 Volt Loop = 50 Ohms Maximum. 32 to 120 degrees F. 9.5″ Wide 3.5″ High 1.0 Deep. UL609 Local Grade A Mercantile, Police Station. Connect with Basic Line Security (requires #NX003-C enclosure). UL985 Household Fire Warning Systems & Units. UL1023 Household Burglary Alarm Systems &. UL1610 Central Station Burglar Alarm Unit. S303 Local Burglar Alarm Units and Systems. S545 Standard for Residential Fire Warning. Please request an invoice before paying if combining with items from our other listings. Your satisfaction is guaranteed. If we made a mistake, then the S&H is on us.