SMART-Net Expansion Board

The SMART-Net™ Expansion Board maximizes both the number of SMART-Sensor devices you can use and the combined SMART-Net cable length you can connect to a host controller. Powered by the host controller, the SMART-Net Expansion Board supplies power for up to 16 SMART-Sensor devices and does not repeat the SMART-Sensor signal, simplifying field wiring and providing a high degree of flexibility.

Purchase Products


  • RJ11 or four-pin port allows you to connect the SMART-Net Expansion Board to the controller’s SMART-Net port.
  • Use multiple SMART-Net Expansion Boards to maximize the length of the SMART-Net network.
  • Optional external power, supplied by 24 VDC or 24 VAC connection, boosts the power for heavily loaded SMART-Net networks.

Tech Specs


  • Derived from the host controller.
  • Optional external power with 9–24 VDC @ 600 mA or 24 VAC, 3 VA.


  • RJ11 port or designated four-pole screw terminal block.
  • Accepts 12–30 AWG wire.
  • Four 4-pole screw terminal blocks connect to SMART-Net devices.
  • Optional two-pin power.

Ambient Limits

  • Operating: -18°C to 49°C (0°F to 120°F).
  • Shipping: -20°C to 60°C (-4°F to 140°F).
  • Humidity: 10%–90% RH noncondensing.


  • 3 1/4” L x 2 1/2” W x 1” H
    (8.3 cm L x 6.4 cm W x 2.5 cm H).


  • 55 g (0.121 lb).


  • SMART-Sensor voice cable or any wire type from 12–30 AWG for host controller connection.


  • ROHS.
  • WEEE.

Application Diagram

Host Controller

SMART–Net Network

Power Select