NTI Digital Input/Output Expander/Open-Collector Outputs

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The ENVIROMUX-DI16DO(R)16 Digital Input/Output Expander enables the connection of up to 16 additional digital sensors and output devices using just one RJ45 Sensor port on an ENVIROMUX-2D, ENVIROMUX-5D, or ENVIROMUX-16D Server Environment Monitoring System (SYSTEM).

The ENVIROMUX-DI16DO16 includes digital outputs with an open-collector design for the control of up to 16 relays, solenoids, LEDs, and other devices that operate at voltages between 0-24VDC (maximum 500mA). The ENVIROMUX-DI16DOR16 includes digital outputs with a normally-open SPST relay design for the control of up to 16 different devices that operate at a maximum125VAC (0.5A maximum) or maximum 30VDC (1.0A maximum).


  • Adds 16 digital inputs and 16 digital open-collector outputs to the ENVIROMUX-2D/5D/16D
  • 1) Interfaces with the ENVIROMUX-2D/5D/16D via the RJ45 Sensor Port
  • Digital inputs:
  • 1) 16 screw terminal pairs for connecting dry contact devices
  • a) One screw terminal pair for tachometer; 0 to 255 Hz
  • 2) Accepts 26 to 16AWG wire
  • 3) Potential free
  • 4) Voltage range: 0 to +36VDC
  • 5) Over-voltage surge protected
  • Digital outputs:
  • 1) 16 screw terminal pairs for open-collector outputs
  • 2) Accepts 26 to 16AWG wire
  • 3) Rated sink current: 500 mA per output
  • 4) +5VDC, 22kΩ pull-ups
  • 5) Voltage range: 0 to +24VDC
  • 6) Over-voltage surge protected
  • Supports CAT5/5e/6 cable up to 500 ft. (152.4 m)
  • Control via SNMP:
  • 1) Requires read-write community configuration.
  • 2) Digital inputs are fixed values (not writable) while open-collector outputs are writable.
  • 3) Locate OIDS using a MIB browser.
  • Powered by ENVIROMUX-2D/5D/16D.
  • Compatible with ENVIROMUX-2D/5D/16D.
  • Dimensions WxDxH: 6.49x3.10x1.08 in (165x79x27 mm)
  • Regulatory approvals: RoHS
  • Operating temperature: 32 to 158°F (0 to 70°C)
  • Storage temperature: -4 to 176°F (0 to 70°C)
  • Compatible with ENVIROMUX-FSC Fiber Converter/Extender.
  • 1) Use to extend sensor up to 1.2 miles (2 km) from the ENVIROMUX unit.

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