Home -> Controllers Elk M1 16 Zone Expander Our Price $78.50 Product Variation 16 Zone Expander $78.50 Buy item(s) M1 16 Zone Input Expander adds 16 hardwired zones (EOL resistor supervised) to the Elk M1 Gold or Elk M1 EZ8 Controls. the 16 Zone Expander operates from 4-wire data bus. Up to 12 of these can be used, increasing total zones (inputs) to a total of 208 Hard Wired Zones. Related Items Worth Considering Elk M1 Gold Cross Platform Control Elk 16 Output Expander Elk Ethernet Port Expander Elk LCD Keypad Elk M1 16 Zone Expander Elk M1 Data Bus Hub Elk M1 EZ8 Cross Platform Control Elk M1 Gold Serial Port Interface