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CMMB100 & CMMB102: Dual Mini I/O Modules October 2019

CMMB100 & CMMB102: Dual Mini I/O Modules

Montreal, Canada | October 15th, 2019 – Neptronic is proud to officially announce the launch of the CMMB100 and CMMB102 series. These cost-effective mini I/O modules provide simple expansion of a new or existing controller, offering BACnet and Modbus communication for easy integration of non-intelligent inputs and outputs. Optional plug-in connectors allow for simplified connection.

Power & Communication

  • 24Vac or 24Vdc supply
  • BACnet® MS/TP port or Modbus communication port (selectable)

Inputs & Outputs

CMMB100 series:

  • Inputs: 8 universal inputs

CMMB102 series:

  • Inputs: 4 universal inputs
  • Outputs (supervised): 2 universal & 2 binary outputs


  • 4 override switches to manually control each output (CMMB102 series only)
  • LED status indication of each input and output
  • DIN rail mounting
  • Removable, non-strip, raising clamp terminals
  • Removable see-through panel for easy access to DIP switches
  • Optional plug-in connectors allowing for expansion

About Neptronic

Founded in 1976, Neptronic is a private corporation that designs, manufactures and distributes products for the HVAC industry. The Neptronic product line includes intelligent controllers, electronic actuators, actuated valves, humidifiers and electric duct heaters.

Products are designed and manufactured by over 200 dedicated employees in an 80,000 ft² (7,500 m²) state-of-the-art facility located in Montreal, Canada. Using a vertically integrated plant model, all R&D and manufacturing capabilities are located under one roof; from software and hardware development, to SMT circuit board assembly, to sheet metal fabrication, to product testing.

Neptronic is committed to research and development, provides innovative products and technologies and exports over 75% of its sales through an exclusive distribution network for the HVAC industry worldwide

For more information visit the Neptronic website at neptronic.com