DC-Check product banner


DC-Check is a two-port DC voltage check module. This module can sense the presence of +5, +12, or +24Vdc voltage and send the status to Netsense box through a data port. High voltage is isolated from data line by using optoisolators to ensure safety and zero interference.

By using this module with Netsense box, the status of DC voltage can be monitored and stored in our server. Moreover, alert notification can be set in web based application on www.mmnetcenter.com. Using this module with Netsense box is easy. No software configuration is required. Just plug and play. Voltage is configured by jumpers inside the module.

To power up the DC-Check module, please check out Power Injector Module.


  • High/Low pressure switch monitoring
  • Relay status monitoring
  • On/Off switch monitoring


  • Two ports of +5, +12, or +24Vdc voltage check
  • Easy voltage configuration by jumpers inside the module
  • High voltage isolation using optoisolators
  • Plug and play with Netsense box
  • No software configuration
  • Utilizing web base application on www.mmnetcenter.com to monitor, log, and alert


  • Ports: +5, +12, or +24Vdc voltage check x 2, Data x 1
  • Dimension: 8.5 x 6 x 2.5 cm

DC-Check connection

How to connect with Netsense box.

DC-Check diagram

Photo gallery

  • Front view, side view
  • Modules, Power-Injector, and Netsense box
DC-Check-front-view DC-Check-side-green-view DC-Check-side-white-view Module-Power-Netsense